ARP's Custom Age 625+ material is a newly formulated super-alloy, which 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.
Kit Includes:
No Modification to your cylinder head or block is required as these are a direct drop-in replacement for the OEM Head Stud!
Kit Includes:
- (10) Custom Age 625+ head studs
- (10) parallel ground washers
- (10) 8740 chromoly steel 12pt nuts
- (1) 0.5 oz. pack of ARP Ultra-Torque fastener assembly lubricant
No Modification to your cylinder head or block is required as these are a direct drop-in replacement for the OEM Head Stud!
- Yield Strength: 235-255,000 PSI
- Tensile Strength: 260,000 PSI
