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:
20 x Bolts.
113.2mmUnder Head Length.
9mm Shank Length.
1/2"-20 thread into Engine.
18.7mm Bolt Head Diameter.
20 x Flat Washers.
21.75mm Outside Diameter.
13.15mm Inside Diameter.
3mm Thickness.
* Suit OEM and Aftermarket Cylinder Heads, 8740 Grade Material