Holden V8 Head Bolt KitSuit 253-304-308, 12 Point Head, 8740 Grade MaterialBrand: AEROFLOWPart Number: AF37-2130Description: Aeroflow Performance head bolts greatly improve your cylinder head-to-block sealingcompatibilities. This is important in engines with highpower adders such as turbochargers, superchargers or nitrous. They can even be agreat addition to a mildly modified build as insurance against failure.
These head bolts are manufactured from aircraft quality 8740 high tensile strength chromolysteel and cold-forged to ensure molecular integrity within the bolt. Meaning thesebolts are rated up to 190,000 psi making them stronger than Grade 8 and OEM fasteners. Allkits come complete with hardened parallel washers for an even load distribution and accurate torque readings.
Additional Specifications: Kit Contains:
14 x Long Bolts.
105.5mm Under Head Length.
7.2mm Shank Length.
7/16-14" thread into Engine.
18.7mm Bolt Head Diameter.
10 x Short Bolts.
44.2mm UnderHead Length.
16.2mm ShankLength.
7/16-14" thread into Engine.
21.5mm Bolt Head Diameter.
24 x FlatWashers.
20.5mm Outside Diameter. 11.5mm Inside Diameter.
3mm Thickness.