ARP 247-4204 Custom Age 625+ Head Stud Kit

The ultimate headstud avaliable for all 5.9L and 6.7L cummins engines. These fasteners are used in nearly every build from mild to extreme horsepower levels. You will not find a fastener on the market that can compete with the ARP625+ kit.

Features:

-ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi.

-ARP studs are thread rolled after heat-treat, which gives them about 1000% better fatigue strength than those studs that are threaded prior to heat-treat

-260,000 -280,000 PSI Tensile strength

-These head studs are recommended for all trucks making above stock horsepower

-Required for cylinder heads equip with fire rings

Please email [email protected] for availability *

Fitment Notes:

1998.5 – 2023 Cummins Engines