Factory head bolts can stretch under higher boost, heavy towing, or elevated cylinder pressure—raising the risk of a lifted head and blown gasket.

The ARP 247-4204 head stud kit is for Cummins 1998.5-2024. It replaces stretch-prone hardware with ARP fasteners built for high-load diesel use.

What you get

• Custom Age 625 Plus material (typical tensile ~260,000 psi per ARP)
• ARP cylinder-head studs with nuts and washers as supplied in the kit
• ARP Ultra-Torque assembly lubricant (when included per ARP instructions)
• Fitment: Cummins 1998.5-2024
• Follow ARP installation instructions for your exact kit

Specs

• ARP part number: 247-4204
• Material: Custom Age 625 Plus
• Typical tensile strength: ~260,000 psi (ARP material data)
• Thread reference from ARP instructions: M12 X 1.75
• ARP torque/stretch note: 8. Following the manufacturers recommended torque sequence tighten the nuts in three equal steps to 150 ft lbs
• ARP catalog application: Dodge 5.9L/6.7L 24V Cummins '98-pres custom age head stud kit

Built for diesel owners who tow, tune, or rebuild—and want head-clamping they can trust. Install with the ARP instruction sheet for 247-4204—use the supplied lubricant and torque or stretch procedure. Verify fitment for your exact engine and year before ordering.