ARP 12v Custom H 625 Head Studs Super Alloy Aged
12mm Head stud kit for the 89-1998 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. Tensile strength is 260,000 psi.