af37-2055- Subaru EJ20 and EJ25 DOHC Head Stud Kit
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