ARP Custom Age 625 Head Studs - EJ Series
Custom Age 625 + is a newly formulated super-alloy.It 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 “ 280,000 psi.
Includes a set of twelve Custom Age 625+ head studs, twelve parallel ground washers, twelve 8740 chromemoly steel 12 point nuts and Â½ oz. pack of ARP Ultra-Torque fastener assembly lubricant.
All Custom Age 625+ studs are centerless ground, heat treated prior to thread rolling and machining, and are normally rated at 270,000 psi.these fasteners deliver a 55% increase in tensile strength and are reusable as compared to the OEM Torque to Yield (TTY) head bolts.
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to https://www.P65Warnings.ca.gov/passenger-vehicle.
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