Aeroflow Subaru EJ20 and EJ25 DOHC Head Stud Kit - AF37-2055

Subaru EJ20 and EJ25 DOHC Head Stud Kit 12 Point Nuts, 8740 Grade Material Aeroflow Performance head studs 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. All head studs provide a more accurate and consistent torque loading over traditional head bolts. These head studs are manufactured from aircraft quality 8740 high tensile strength chromoly steel and cold-forged to ensure molecular integrity within the stud. Meaning these studs are rated up to 190,000 psi making them stronger than Grade 8 and OEM fasteners. All kits come complete with 12-point nuts and hardened washers for an even load distribution and accurate torque readings. Kit Contains 12 x Studs 195mm Overall Length 123.95mm Shank Length 9.30mm Shank Diameter M11 x 1.25mm thread into Engine Block M11 x 1.25mm thread on Nut End 12 x 12 Point Nuts M11 x 1.25mm Thread 18.30mm Outside Diameter 11.80mm Height 1/2 Spanner Size 12 x Flat Washers 24.85mm Outside Diameter 11.30mm Inside Diameter 3mm Thickness Torque Recommendations 90 ft.lbs or 122Nm