260-4704 - ARP Subaru EJ Series DOHC Custom Age Head Stud Kit

ARP Custom Age 625+

ARP's Custom Age 625+ material is a newly formulated super-alloy that demonstrates superior fatigue cycle life, tensile strength, and toughness—with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all, it is less expensive and is expected to soon replace MP-35 as the material of choice in the high-strength, super-alloy field. Typical tensile strength is 280,000 psi.

Includes:

• Custom Age 625+ studs
• Parallel Ground Washers
• 8740 Chrome Moly Steel 12 pt Nuts
• 1/2 oz. ARP Ultra-Torque Assembly Lube