{"title":"Header Bolts \u0026 Studs","description":"","products":[{"product_id":"ar444-1202","title":"ARP Mopar 340-360 SS 12pt header bolt kit (444-1202)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits SB\/BB Chrysler 5\/16\" Thread X .750\" UHL (14 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR444-1202\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB\/BB Chrysler 5\/16\" Thread X .750\" UHL (14 Pack)","offer_id":42024329937067,"sku":"AR444-1202","price":78.84,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-bb-chrysler-5-16-thread-x-750-uhl-14-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar444-1202-srcopyright-1159771636.jpg?v=1749656894"},{"product_id":"ar434-1301","title":"ARP Chevy LS1 header stud kit (434-1301)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point Nut S\/S\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X 1.750\" OAL (12 Pack) 3\/8\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR434-1301\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X 1.750\" OAL (12 Pack) 3\/8\" Wide Header Flange","offer_id":42024330854571,"sku":"AR434-1301","price":393.82,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-1-750-oal-12-pack-3-8-wide-header-flange-arp-fasteners-exhaust-header-stud-kit-12-point-nut-s-s-ar434-1301-srcopyright-1159771610.jpg?v=1749656399"},{"product_id":"ar434-1202","title":"ARP SBC GENIII\/LS 3\/8 FLANGE SS 12PT HEADER BOLT KIT (434-1202)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X 1.181\" UHL (12 Pack) 3\/8\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR434-1202\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X 1.181\" UHL (12 Pack) 3\/8\" Wide Header Flange","offer_id":42024330887339,"sku":"AR434-1202","price":155.04,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-1-181-uhl-12-pack-3-8-wide-header-flange-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar434-1202-srcopyright-1159771609.jpg?v=1749656298"},{"product_id":"ar434-1201","title":"ARP SBC GENIII\/LS 1\/4 FLANGE SS 12PT HEADER BOLT KIT (434-1201)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X .984\" UHL (12 Pack) 1\/4\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR434-1201\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X .984\" UHL (12 Pack) 1\/4\" Wide Header Flange","offer_id":42024330920107,"sku":"AR434-1201","price":143.35,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-984-uhl-12-pack-1-4-wide-header-flange-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar434-1201-srcopyright-1159771608.jpg?v=1749656296"},{"product_id":"ar400-1404","title":"ARP SB Ford 3\/8\" x 1.670 SS header stud kit (400-1404)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits Ford 3\/8\" Thread x 1.670\" OAL (16 Piece)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1404\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits Ford 3\/8\" Thread x 1.670\" OAL (16 Piece)","offer_id":42024334459051,"sku":"AR400-1404","price":465.12,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-ford-3-8-thread-x-1-670-oal-16-piece-arp-fasteners-exhaust-header-stud-kit-12-point-s-s-ar400-1404-srcopyright-1159771513.jpg?v=1749654722"},{"product_id":"ar400-1403","title":"ARP BB Chevy 3\/8\" x 1.670 SS header stud kit (400-1403)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" Thread x 1.670\" OAL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1403\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" Thread x 1.670\" OAL (16 Pack)","offer_id":42024334491819,"sku":"AR400-1403","price":465.12,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-thread-x-1-670-oal-16-pack-arp-fasteners-exhaust-header-stud-kit-12-point-s-s-ar400-1403-srcopyright-1159771512.jpg?v=1749654719"},{"product_id":"ar400-1402","title":"ARP SB Chevy 3\/8\" 12pt SS header stud kit (400-1402)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" Thread x 1.670\" OAL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1402\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" Thread x 1.670\" OAL (12 Pack)","offer_id":42024334524587,"sku":"AR400-1402","price":345.15,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-thread-x-1-670-oal-12-pack-arp-fasteners-exhaust-header-stud-kit-12-point-s-s-ar400-1402-srcopyright-1159771511.jpg?v=1749654617"},{"product_id":"ar400-1212","title":"ARP BB Chevy SS 12pt header bolt kit (400-1212)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1212\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" X 1.000\" UHL (16 Pack)","offer_id":42024334590123,"sku":"AR400-1212","price":141.59,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1212-srcopyright-1159771509.jpg?v=1749654611"},{"product_id":"ar400-1211","title":"ARP SB Chevy SS 12pt header bolt kit (400-1211)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" X 1.000\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1211\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" X 1.000\" UHL (12 Pack)","offer_id":42024334655659,"sku":"AR400-1211","price":105.64,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-x-1-000-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1211-srcopyright-1159771508.jpg?v=1749654608"},{"product_id":"ar400-1210","title":"ARP 3\/8\" x 1.000 SS 12pt header bolt kit (400-1210)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal 3\/8\" X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1210\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal 3\/8\" X 1.000\" UHL (16 Pack)","offer_id":42024334688427,"sku":"AR400-1210","price":96.46,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1210-srcopyright-1159771507.jpg?v=1749654605"},{"product_id":"ar400-1209","title":"ARP 3\/8\" x 1.000 SS 12pt header bolt kit (400-1209)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal 3\/8\" X 1.000\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1209\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal 3\/8\" X 1.000\" UHL (12 Pack)","offer_id":42024334721195,"sku":"AR400-1209","price":98.23,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-x-1-000-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1209-srcopyright-1159771506.jpg?v=1749654603"},{"product_id":"ar400-1208","title":"ARP 3\/8\" x .750 SS 12pt header bolt kit (400-1208)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal 3\/8\" X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1208\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal 3\/8\" X .750\" UHL (16 Pack)","offer_id":42024334753963,"sku":"AR400-1208","price":70.87,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1208-srcopyright-1159771505.jpg?v=1749654599"},{"product_id":"ar400-1204","title":"ARP 3\/8\" x .875 drilled SS 12pt header bolt kit (400-1204)","description":"\u003cb\u003eExhaust Header Bolt Kit, Drilled 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" X .875\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1204\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" X .875\" UHL (16 Pack)","offer_id":42024334786731,"sku":"AR400-1204","price":163.17,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-x-875-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-drilled-12-point-s-s-ar400-1204-srcopyright-1159771504.jpg?v=1749654498"},{"product_id":"ar400-1202","title":"ARP 3\/8\" x .750 SS 12pt header bolt kit (400-1202)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1202\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi. \u003cbr\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" X .750\" UHL (16 Pack)","offer_id":42024334819499,"sku":"AR400-1202","price":86.55,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1202-srcopyright-1159771503.jpg?v=1749654495"},{"product_id":"ar400-1201","title":"ARP 3\/8\" x .750 SS 12pt header bolt kit (400-1201)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point S\/S\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" X .750\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1201\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" X .750\" UHL (12 Pack)","offer_id":42024334852267,"sku":"AR400-1201","price":69.98,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-x-750-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-s-s-ar400-1201-srcopyright-1159771502.jpg?v=1749654492"},{"product_id":"ar400-1112","title":"ARP BB Chevy SS hex header bolt kit (400-1112)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head S\/S\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1112\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" X 1.000\" UHL (16 Pack)","offer_id":42024334885035,"sku":"AR400-1112","price":131.82,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-s-s-ar400-1112-srcopyright-1159771501.jpg?v=1749654489"},{"product_id":"ar400-1102","title":"ARP 3\/8\" x .750 SS hex header bolt kit (400-1102)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head S\/S\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1102\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" X .750\" UHL (16 Pack)","offer_id":42024334917803,"sku":"AR400-1102","price":89.06,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-s-s-ar400-1102-srcopyright-1159771500.jpg?v=1749654487"},{"product_id":"ar400-1101","title":"ARP 3\/8\" x .750 SS hex header bolt kit (400-1101)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head S\/S\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" X .750\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR400-1101\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" X .750\" UHL (12 Pack)","offer_id":42024334950571,"sku":"AR400-1101","price":70.58,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-x-750-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-s-s-ar400-1101-srcopyright-1159771499.jpg?v=1749654483"},{"product_id":"ar245-1903","title":"ARP KB Hemi 1.250\" 12pt oil pan stud kit (245-1903)","description":"\u003cb\u003eOil Pan Stud Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cb\u003efits Chrysler KB Hemi 1.300\" UHL\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR245-1903\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eThe engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. They're designed to make it as easy as possible to install a pan and seal it properly. You'll note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross-threading. For those who prefer bolts, ARP's got you covered, too. Both are available in black oxide finished chrome moly steel or polished ARP Stainless. Also, you may choose between conventional hex style or the space-saving 12-point nuts. The stud kits come complete with a special locking flanged nut, while the bolt kits come with washers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits Chrysler KB Hemi 1.300\" UHL","offer_id":42024339407019,"sku":"AR245-1903","price":282.43,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-chrysler-kb-hemi-1-300-uhl-arp-fasteners-oil-pan-stud-kit-12-point-black-oxide-ar245-1903-srcopyright-1159771374.jpg?v=1749652085"},{"product_id":"ar245-1901","title":"ARP KB Hemi 1.300\" hex oil pan stud kit (245-1901)","description":"\u003cb\u003eOil Pan Stud Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits Chrysler KB Hemi 1.300\" UHL\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR245-1901\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eThe engineers at ARP spent quite a bit of time developing these highly effective, unique oil pan studs. They're designed to make it as easy as possible to install a pan and seal it properly. You'll note that the studs have a radiused bullet nose that serves to locate the pan rails, then allow the nuts to be easily installed without the worry of cross-threading. For those who prefer bolts, ARP's got you covered, too. Both are available in black oxide finished chrome moly steel or polished ARP Stainless. Also, you may choose between conventional hex style or the space-saving 12-point nuts. The stud kits come complete with a special locking flanged nut, while the bolt kits come with washers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits Chrysler KB Hemi 1.300\" UHL","offer_id":42024339472555,"sku":"AR245-1901","price":213.33,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-chrysler-kb-hemi-1-300-uhl-arp-fasteners-oil-pan-stud-kit-hex-head-black-oxide-ar245-1901-srcopyright-1159771372.jpg?v=1749652079"},{"product_id":"ar245-1301","title":"ARP KB Hemi 12pt exhaust stud kit (245-1301)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cb\u003efits SB Chrysler 340-360 \u0026amp; Hemi, (16) 3\/8\" Thread x 2.000\" OAL (Provision For Blower Bracket)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR245-1301\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chrysler 340-360 \u0026 Hemi, (16) 3\/8\" Thread x 2.000\" OAL (Provi","offer_id":42024339505323,"sku":"AR245-1301","price":275.46,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chrysler-340-360-hemi-16-3-8-thread-x-2-000-oal-provi-arp-fasteners-exhaust-header-stud-kit-12-point-black-oxide-ar245-1301-srcopyright-1159771371.jpg?v=1749651978"},{"product_id":"ar235-4306","title":"ARP BB Chevy Bowtie, Dart Mrln exh hsk - 8 STUDS ONLY (235-4306)","description":"\u003cb\u003eLong Exhaust Stud Kit, 12-Point Nut\u003c\/b\u003e\u003cb\u003efits BB Chev, 8-Pieces (1.000\" Coarse Thread With Nuts \u0026amp; Washers)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR235-4306\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to \"aircraft\" quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat-treated to 190,000 psi for the 8740 material and 220,000 psi for the ARP2000 material. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev, 8-Pieces (1.000\" Coarse Thread With Nuts \u0026 Washers)","offer_id":42024340455595,"sku":"AR235-4306","price":241.58,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-8-pieces-1-000-coarse-thread-with-nuts-washers-arp-fasteners-long-exhaust-stud-kit-12-point-nut-ar235-4306-srcopyright-1159771342.jpg?v=1749651493"},{"product_id":"ar235-4106","title":"ARP BB Chevy Bowtie, Dart Merlin exh hsk - 8 STUDS ONLY (235-4106)","description":"\u003cb\u003eLong Exhaust Stud Kit, Hex Nut\u003c\/b\u003e\u003cb\u003efits BB Chev, 8-Pieces (1.000\" Coarse Thread With Nuts \u0026amp; Washers)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR235-4106\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eIt is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated far superior to \"aircraft\" quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat-treated to 190,000 psi for the 8740 material and 220,000 psi for the ARP2000 material. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev, 8-Pieces (1.000\" Coarse Thread With Nuts \u0026 Washers)","offer_id":42024340816043,"sku":"AR235-4106","price":219.83,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-8-pieces-1-000-coarse-thread-with-nuts-washers-arp-fasteners-long-exhaust-stud-kit-hex-nut-ar235-4106-srcopyright-1159754421.jpg?v=1749330245"},{"product_id":"ar134-1202","title":"ARP SBC GENIII\/LS 3\/8 FLANGE 12PT HEADER BOLT KIT (134-1202)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X 1.181\" UHL (12 Pack) 3\/8\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR134-1202\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross threading Studs and bolts come either black oxide chrome moly or Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled NASCAR models are available for those who wish to safety wire their header bolts to prevent loosening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X 1.181\" UHL (12 Pack) 3\/8\" Wide Header Flange","offer_id":42024361623723,"sku":"AR134-1202","price":101.49,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-1-181-uhl-12-pack-3-8-wide-header-flange-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar134-1202-srcopyright-1159770883.jpg?v=1749643202"},{"product_id":"ar134-1201","title":"ARP SBC GENIII\/LS 1\/4 FLANGE 12PT HEADER BOLT KIT (134-1201)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X .984\" UHL (12 Pack) 1\/4\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR134-1201\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross threading Studs and bolts come either black oxide chrome moly or Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled NASCAR models are available for those who wish to safety wire their header bolts to prevent loosening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X .984\" UHL (12 Pack) 1\/4\" Wide Header Flange","offer_id":42024361689259,"sku":"AR134-1201","price":98.97,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-984-uhl-12-pack-1-4-wide-header-flange-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar134-1201-srcopyright-1159770882.jpg?v=1749643199"},{"product_id":"ar134-1102","title":"ARP SBC GENIII\/LS 3\/8 FLANGE HEX HEADER BOLT KIT (134-1102)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X 1.181\" UHL (12 Pack) 3\/8\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR134-1102\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross threading Studs and bolts come either black oxide chrome moly or Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled NASCAR models are available for those who wish to safety wire their header bolts to prevent loosening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X 1.181\" UHL (12 Pack) 3\/8\" Wide Header Flange","offer_id":42024361722027,"sku":"AR134-1102","price":99.28,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-1-181-uhl-12-pack-3-8-wide-header-flange-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar134-1102-srcopyright-1159770881.jpg?v=1749642977"},{"product_id":"ar134-1101","title":"ARP SBC GENIII\/LS 1\/4 FLANGE HEX HEADER BOLT KIT (134-1101)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits GM LS Series M8 X .984\" UHL (12 Pack) 1\/4\" Wide Header Flange\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR134-1101\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross threading Studs and bolts come either black oxide chrome moly or Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled NASCAR models are available for those who wish to safety wire their header bolts to prevent loosening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits GM LS Series M8 X .984\" UHL (12 Pack) 1\/4\" Wide Header Flange","offer_id":42024361787563,"sku":"AR134-1101","price":96.46,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-gm-ls-series-m8-x-984-uhl-12-pack-1-4-wide-header-flange-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar134-1101-srcopyright-1159770880.jpg?v=1749642974"},{"product_id":"ar100-1404","title":"ARP SB Ford 3\/8 x 1.670\" 12pt header stud kit (100-1404)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point Nut Black Oxide\u003c\/b\u003e\u003cb\u003efits SB Ford 3\/8\" X 1.670\" OAL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1404\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Ford 3\/8\" X 1.670\" OAL (16 Pack)","offer_id":42024365457579,"sku":"AR100-1404","price":240.71,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-ford-3-8-x-1-670-oal-16-pack-arp-fasteners-exhaust-header-stud-kit-12-point-nut-black-oxide-ar100-1404-srcopyright-1159770793.jpg?v=1749641166"},{"product_id":"ar100-1403","title":"ARP BB Chevy 3\/8 x 1.670\" 12pt header stud kit (100-1403)","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point Nut Black Oxide\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" X 1.670\" OAL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1403\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" X 1.670\" OAL (16 Pack)","offer_id":42024365490347,"sku":"AR100-1403","price":246.92,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-x-1-670-oal-16-pack-arp-fasteners-exhaust-header-stud-kit-12-point-nut-black-oxide-ar100-1403-srcopyright-1159770792.jpg?v=1749641162"},{"product_id":"ar100-1402","title":"ARP fasteners Exhaust Header Stud Kit, 12-Point Nut Black Oxide AR100-1402","description":"\u003cb\u003eExhaust Header Stud Kit, 12-Point Nut Black Oxide\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" X 1.670\" OAL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1402\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" X 1.670\" OAL (12 Pack)","offer_id":42024365523115,"sku":"AR100-1402","price":180.64,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-x-1-670-oal-12-pack-arp-fasteners-exhaust-header-stud-kit-12-point-nut-black-oxide-ar100-1402-srcopyright-1159770791.jpg?v=1749641160"},{"product_id":"ar100-1212","title":"ARP BB Chevy 12pt header bolt kit (100-1212)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" Thread X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1212\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross threading. Studs and bolts come either black oxide chrome moly or Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled NASCAR models are available for those who wish to safety to prevent loosening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" Thread X 1.000\" UHL (16 Pack)","offer_id":42024365555883,"sku":"AR100-1212","price":86.11,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-thread-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar100-1212-srcopyright-1159770790.jpg?v=1749641057"},{"product_id":"ar100-1210","title":"ARP 3\/8 X 1.000\" 12pt header bolt kit (100-1210)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1210\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X 1.000\" UHL (16 Pack)","offer_id":42024365588651,"sku":"AR100-1210","price":85.05,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar100-1210-srcopyright-1159770789.jpg?v=1749641054"},{"product_id":"ar100-1209","title":"ARP 3\/8 X 1.000\" 12pt header bolt kit (100-1209)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X 1.000\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1209\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X 1.000\" UHL (12 Pack)","offer_id":42024365621419,"sku":"AR100-1209","price":71.16,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-1-000-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar100-1209-srcopyright-1159770788.jpg?v=1749641051"},{"product_id":"ar100-1208","title":"ARP 3\/8 X .750\" 12pt header bolt kit (100-1208)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1208\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X .750\" UHL (16 Pack)","offer_id":42024365654187,"sku":"AR100-1208","price":66.27,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar100-1208-srcopyright-1159770787.jpg?v=1749641048"},{"product_id":"ar100-1202","title":"ARP BB Chevy \u0026 Ford 3\/8\" 12pt header bolt kit (100-1202)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" Thread X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1202\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" Thread X .750\" UHL (16 Pack)","offer_id":42024365686955,"sku":"AR100-1202","price":68.78,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-thread-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1202-srcopyright-1159770786.jpg?v=1749641045"},{"product_id":"ar100-1207","title":"ARP fasteners Exhaust Header Bolt Kit, 12-Point Black Oxide AR100-1207","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X .750\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1207\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X .750\" UHL (12 Pack)","offer_id":42024365719723,"sku":"AR100-1207","price":53.71,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-750-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar100-1207-srcopyright-1159770785.jpg?v=1749641042"},{"product_id":"ar100-1201","title":"ARP SB Chevy 3\/8 x .750\" 12pt header bolt kit (100-1201)","description":"\u003cb\u003eExhaust Header Bolt Kit, 12-Point Black Oxide\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" Thread X .750\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1201\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" Thread X .750\" UHL (12 Pack)","offer_id":42024365752491,"sku":"AR100-1201","price":55.04,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-thread-x-750-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-12-point-black-oxide-ar100-1201-srcopyright-1159770784.jpg?v=1749641039"},{"product_id":"ar100-1112","title":"ARP BB Chevy hex header bolt kit (100-1112)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" Thread X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1112\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex or 12-point nuts, as required. Studs are manufactured with a unique nut-starter nose that helps prevent cross threading. Studs and bolts come either black oxide chrome moly or Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled NASCAR models are available for those who wish to safety to prevent loosening.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" Thread X 1.000\" UHL (16 Pack)","offer_id":42024365785259,"sku":"AR100-1112","price":83.73,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-thread-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1112-srcopyright-1159770783.jpg?v=1749640817"},{"product_id":"ar100-1110","title":"ARP 3\/8 X 1.000\" hex header bolt kit (100-1110)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X 1.000\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1110\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X 1.000\" UHL (16 Pack)","offer_id":42024365818027,"sku":"AR100-1110","price":70.71,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-1-000-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1110-srcopyright-1159770782.jpg?v=1749640814"},{"product_id":"ar100-1109","title":"ARP 3\/8 X 1.000\" hex header bolt kit (100-1109)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X 1.000\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1109\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X 1.000\" UHL (12 Pack)","offer_id":42024366014635,"sku":"AR100-1109","price":53.57,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-1-000-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1109-srcopyright-1159770781.jpg?v=1749640811"},{"product_id":"ar100-1108","title":"ARP 3\/8 X .750\" hex header bolt kit (100-1108)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1108\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X .750\" UHL (16 Pack)","offer_id":42024366047403,"sku":"AR100-1108","price":68.34,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1108-srcopyright-1159770780.jpg?v=1749640810"},{"product_id":"ar100-1107","title":"ARP 3\/8 X .750\" hex header bolt kit (100-1107)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eUniversal, 3\/8\" Thread X .750\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1107\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"Universal, 3\/8\" Thread X .750\" UHL (12 Pack)","offer_id":42024366375083,"sku":"AR100-1107","price":52.67,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-universal-3-8-thread-x-750-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1107-srcopyright-1159770779.jpg?v=1749640806"},{"product_id":"ar100-1102","title":"ARP BB Chevy \u0026 Ford 3\/8\" hex header bolt kit (100-1102)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits BB Chev 3\/8\" Thread X .750\" UHL (16 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1102\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e Premium Grade Bolt And Stud Kits To Facilitate Installation Of Exhaust Headers. The Stainless 300 Material Is Not Affected By Corrosion Or Extreme Heat. Compact 12-point Design Lets You Easily Slip A Socket Close To The Pipe. Kits Include Specific Number Of Parts For Your Application, Premium Grade Washers And Hex Or 12 Point Nuts. Studs Are Manufactured With A Unique Nut Starter Nose That Helps Prevent Cross Threading. Studs And Bolts Come In Either Black Oxide Chrome Moly Or Stainless 300, Both Are Rated At 170,000 Psi.\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits BB Chev 3\/8\" Thread X .750\" UHL (16 Pack)","offer_id":42024366407851,"sku":"AR100-1102","price":67.16,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-bb-chev-3-8-thread-x-750-uhl-16-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1102-srcopyright-1159770778.jpg?v=1749640803"},{"product_id":"ar100-1101","title":"ARP SB Chevy 3\/8 x .750\" hex header bolt kit (100-1101)","description":"\u003cb\u003eExhaust Header Bolt Kit, Hex Head Black Oxide\u003c\/b\u003e\u003cb\u003efits SB Chev 3\/8\" Thread X .750\" UHL (12 Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eARP\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAR100-1101\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts. The ARP Stainless material is not affected by corrosion or extreme heat, making it ideal for the application. What's more, the compact 12-point nut lets you easily slip a socket close to the pipe. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading. Studs and bolts come either black oxide chrome moly or polished ARP Stainless. Both are nominally rated at 180,000 psi tensile strength; substantially stronger than Grade 8 hardware. Specially drilled \"NASCAR\" models are available for those who wish to safety wire their header bolts to prevent loosening. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"ARP Fasteners","offers":[{"title":"fits SB Chev 3\/8\" Thread X .750\" UHL (12 Pack)","offer_id":42024366506155,"sku":"AR100-1101","price":66.14,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/arp-fits-sb-chev-3-8-thread-x-750-uhl-12-pack-arp-fasteners-exhaust-header-bolt-kit-hex-head-black-oxide-ar100-1101-srcopyright-1159770775.jpg?v=1749640694"},{"product_id":"af37-1000","title":"Aeroflow 3\/8-16\" Header Bolts 3\/4\" UHL (AF37-1000)","description":"\u003cb\u003e3\/8-16\" Header Bolts 3\/4\" UHL\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eHex Head, Pack of 12\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eAeroflow\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAF37-1000\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eWhen installing headers youwill need header bolts, factory exhaust manifold boltswon't work. These Aeroflow header bolts are made from Grade 8 steel for strength. They are coated in a black oxide for protection and long-lasting durability. Each hex head is designed to take a7\/16\" spanner size. This compact hex head is ideal for use where space is minimal on most aftermarket header flanges.\u003c\/p\u003e \u003cbr\u003e\u003cb\u003eAdditional Specifications: \u003c\/b\u003e\u003cdiv class=\"content-body\"\u003e \u003cp\u003eSold as a set of 12. \u003cbr\u003eThread size : 3\/8-16\"\u003cbr\u003eOverall Length : 28.3mm\u003cbr\u003eUnder Head Length : 19mm\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Aeroflow Performance","offers":[{"title":"Hex Head, Pack of 12","offer_id":42643170197675,"sku":"AF37-1000","price":16.56,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/aeroflow-performance-hex-head-pack-of-12-aeroflow-3-8-16-header-bolts-3-4-uhl-af37-1000-srcopyright-1159756486.jpg?v=1749369125"},{"product_id":"af37-1001","title":"Aeroflow 3\/8-16\" Header Bolts 1\" UHL (AF37-1001)","description":"\u003cb\u003e3\/8-16\" Header Bolts 1\" UHL\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eHex Head, Pack of 12\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003eAeroflow\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003eAF37-1001\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eWhen installing headers youwill need header bolts, factory exhaust manifold boltswon't work. These Aeroflow header bolts are made from Grade 8 steel for strength. They are coated in a black oxide for protection and long-lasting durability. Each hex head is designed to take a7\/16\" spanner size. This compact hex head is ideal for use where space is minimal on most aftermarket header flanges.\u003c\/p\u003e \u003cbr\u003e\u003cb\u003eAdditional Specifications: \u003c\/b\u003e\u003cdiv class=\"content-body\"\u003e \u003cp\u003eSold as a set of 12. \u003cbr\u003eThread size : 3\/8-16\"\u003cbr\u003eOverall Length : 34.7mm\u003cbr\u003eUnder Head Length : 25mm\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Aeroflow Performance","offers":[{"title":"Hex Head, Pack of 12","offer_id":42643170263211,"sku":"AF37-1001","price":17.08,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/products\/aeroflow-performance-hex-head-pack-of-12-aeroflow-3-8-16-header-bolts-1-uhl-af37-1001-srcopyright-1159756484.jpg?v=1749369119"},{"product_id":"pr66753","title":"Proform Wedge Locking Header Bolts (PR66753)","description":"\u003cb\u003eWedge Locking Header Bolts\u003c\/b\u003e\u003cb\u003e1\" UHL x 3\/8-16\" (Set Of 12)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003ePROFORM\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003ePR66753\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e GM V6, SB 265-400, Buick, Olds, Pontiac '79 \u0026amp; earlier Mopar BB383-440 exc 413, AMC V8's w 3\/8\" bolts\u003c\/p\u003e\n\u003cp\u003eEach PROFORM Grade 8 Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft-lbs, the washers’ super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self-locked in this manner, any bolt-loosening rotation is blocked by a wedge-locking action created by the washers’ interfacing,matching cams. It’s an uphill climb: vibration that might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, PROFORMHeader Bolts can be untightened with a normal wrench, lubricated, and reused.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Proform","offers":[{"title":"1\" UHL x 3\/8-16\" (Set Of 12)","offer_id":43504358654123,"sku":"PR66753","price":96.02,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/files\/proform-1-uhl-x-3-8-16-set-of-12-proform-wedge-locking-header-bolts-pr66753-srcopyright-1159735631.jpg?v=1748958725"},{"product_id":"pr66754","title":"Proform Wedge-Locking Header Bolts - Nickle Finish (PR66754)","description":"\u003cb\u003eWedge-Locking Header Bolts - Nickle Finish\u003c\/b\u003e\u003cb\u003eSuit GM LS Series, M8 x .948\" UHL (12-Pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003ePROFORM\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003ePR66754\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eEach PROFORM Grade 8 HeaderBolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft-lbs, the washers super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self-locked in this manner, any bolt-loosening rotation isblocked by a wedge-locking action created by the washers interfacing, matching cams. Its an uphill climb: vibrationthat might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, PROFORMHeader Bolts can be untightened with a normal wrench, lubricated, and reused.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGrade 8 (12.9) Steel\u003c\/li\u003e\n\u003cli\u003eHex Head Type\u003c\/li\u003e\n\u003cli\u003e.984-inch Length\u003c\/li\u003e\n\u003cli\u003eFits GM LS Engines with 1\/4-inch Wide Flange\u003c\/li\u003e\n\u003cli\u003eSold as One Setof 12 Pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Proform","offers":[{"title":"Suit GM LS Series, M8 x .948\" UHL (12-Pack)","offer_id":43504358785195,"sku":"PR66754","price":90.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/files\/proform-suit-gm-ls-series-m8-x-948-uhl-12-pack-proform-wedge-locking-header-bolts-nickle-finish-pr66754-srcopyright-1159735630.jpg?v=1748958723"},{"product_id":"pr66756","title":"Proform Wedge-Locking Header Bolts - Black Oxide (PR66756)","description":"\u003cb\u003eWedge-Locking Header Bolts - Black Oxide\u003c\/b\u003e\u003cb\u003eSuit BB Chev 396-502, Ford 5.0L, SB Ford 289-302-351W, Mopar 413\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003ePROFORM\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003ePR66756\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eEach PROFORM 12.9 Steel (equiv. Grade 8+) Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft-lbs, the washers super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self-locked in this manner, any bolt-loosening rotation is blocked by a wedge-locking action created by the washers interfacing, matching cams. It's an uphill climb: vibration that might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, PROFORMHeader Bolts can be untightened with a normal wrench, lubricated, and reused.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGrade 8 (12.9) Steel\u003c\/li\u003e\n\u003cli\u003eHex Head Type\u003c\/li\u003e\n\u003cli\u003e1-inch Length\u003c\/li\u003e\n\u003cli\u003eFits GM BB 396-502 exc 348 and 409, Ford 5.0L, SB 289-302-351W, Mopar 413\u003c\/li\u003e\n\u003cli\u003eSold as One Set of16 Pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Proform","offers":[{"title":"Suit BB Chev 396-502, Ford 5.0L, SB Ford 289-302-351W, Mopar 413","offer_id":43504359145643,"sku":"PR66756","price":98.87,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/files\/proform-suit-bb-chev-396-502-ford-5-0l-sb-ford-289-302-351w-mopar-413-proform-wedge-locking-header-bolts-black-oxide-pr66756-srcopyright-1159735628.jpg?v=1748958498"},{"product_id":"pr66757","title":"Proform Wedge-Locking Exhaust Collector Bolts (PR66757)","description":"\u003cb\u003eWedge-Locking Exhaust Collector Bolts\u003c\/b\u003e\u003cb\u003e3\/8\" x 1\" UHL (6-pack)\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eBrand: \u003c\/b\u003e\u003cspan\u003ePROFORM\u003c\/span\u003e\u003cbr\u003e\u003cb\u003ePart Number: \u003c\/b\u003e\u003cspan\u003ePR66757\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eDescription: \u003c\/b\u003e\u003cdiv class=\"value description\"\u003e \u003cp\u003eEach PROFORM Grade 8 Collector Bolt and Nut combo is permanently assembled with two pairs special locking washers. When the combo is tightened, the washers super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the flange. After being self-locked in this manner, any bolt-loosening rotation is blocked by a wedge-locking action created by the washers interfacing, matching cams. Its an uphill climb: vibration that might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. PROFORM Collector Bolts can beuntightened with a normal wrench, lubricated, and reused.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGrade 8 (12.9) Steel\u003c\/li\u003e\n\u003cli\u003eHex Head Type\u003c\/li\u003e\n\u003cli\u003e1-inch Length\u003c\/li\u003e\n\u003cli\u003eSold as One SetOf 6 Pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Proform","offers":[{"title":"3\/8\" x 1\" UHL (6-pack)","offer_id":43504359178411,"sku":"PR66757","price":65.05,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0520\/9319\/0315\/files\/proform-3-8-x-1-uhl-6-pack-proform-wedge-locking-exhaust-collector-bolts-pr66757-srcopyright-1159735627.jpg?v=1748958495"}],"url":"https:\/\/stealthride.co.nz\/collections\/fabrication-fasteners-engine-fasteners-header-bolts-studs.oembed?page=4","provider":"Stealth Ride","version":"1.0","type":"link"}