12 Point Head, Suit OEM and Aftermarket Cylinder Heads with 1/2" Holes, 8740 Grade Material.
Aeroflow Performance head bolts greatly improve your cylinder head-to-block sealing compatibilities. This is important in engines with high power adders such as turbochargers, superchargers or nitrous. They can even be a great addition to a mildly modified build as insurance against failure.
These head bolts are manufactured from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity within the bolt. Meaning these bolts are rated up to 190,000 psi making them stronger than Grade 8 and OEM fasteners. All kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.
Kit Contains:
10 x Long Bolts.
101mm Under Head Length.
7.85mm Shank Length.
1/2-13" thread into Engine.
21.5mm Bolt Head Diameter.
10 x Short Bolts.
63.2mm Under Head Length.
33.3mm Shank Length.
1/2-13" thread into Engine.
21.5mm Bolt Head Diameter.
20 x Flat Washers.
22.1mm Outside Diameter. 12.7mm Inside Diameter.
3mm Thickness.
