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 Long Bolts.
103.2mm Under Head Length.
10.9mm Shank Length.
M11 x 2.00mm thread into Engine.
18.7mm Bolt Head Diameter.
10 x Short Bolts.
48.4mm Under Head Length.
7.7mm Shank Length.
M8 x 1.25mm thread into Engine.
14.6mm Bolt Head Diameter.
20 x Large Flat Washers.
21.8mm Outside Diameter.
11mm Inside Diameter.
3mm Thickness
20 x Small Flat Washers.
15.8mm Outside Diameter.
8.25mm Inside Diameter.
3mm Thickness.
* Suit 2004 and On Engines, 8740 Grade Material