Head Studs

D&J Precision Machine 9/16x6.5" Head Stud Kit   Our 9/16x6.5" head stud kit is designed and manufactured for ultimate performance and reliability. Custom made by ARP, these head studs are complemented by nuts and washers machined by us to ensure proper clearance for the...

ARP 247-4204 Custom Age 625+ Head Stud Kit – 5.9L / 6.7L Cummins   When cylinder pressure goes up, factory hardware becomes the failure point. The ARP 247-4204 Custom Age 625+ Head Stud Kit is built for high-horsepower and competition-level 5.9L and 6.7L Cummins...

The ARP 247-4202 is a Pro Series Cylinder Head Stud Kit designed for 1998.5–2024 Dodge Ram 5.9L and 6.7L Cummins diesel engines. Made from ARP2000 alloy, these high-strength studs (220,000 psi) prevent cylinder head lifting and gasket failures in high-performance or towing applications. The kit includes 26...