12mm Head stud kit for Dodge 5.9L 12 Valve Cummins Turbo Diesel CUSTOM AGE 625 PLUS®: This newly formulated super-alloy 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 expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000 psi.

ARP 247-4205 Features:

• Custom Age 625+ Material
• 260,000 psi. tensile strength
• 12 point nuts and parallel ground washers