Mopar Head Stud Kit - 5.9L 24V Cummins

The ARP Mopar Head Stud Kit for 5.9L 24V Cummins (part number 247-4204) is the premium fastening solution for diesel builders who demand reliability under extreme cylinder pressures. Designed specifically for the legendary Cummins turbodiesel platform, this head stud kit replaces factory bolts with superior ARP studs that provide consistent clamping force and dramatically improve head gasket longevity. Whether you're running stock power or pushing boost with a custom tune, proper head fastening is the foundation of engine integrity and longevity.

ARP head studs deliver higher tensile strength than OEM bolts, maintaining their preload through thermal cycling and the sustained heat cycles inherent to diesel operation. The 247-4204 kit features ARP's proprietary 8740 chromoly steel construction, precision-rolled threads, and a 180-degree arc under the head—all critical design factors that distribute load more evenly across the block deck surface. Unlike bolts that can relax and lose tension, studs resist stress relaxation, ensuring the head stays seated flush against the gasket even after thousands of miles of high-compression combustion events.

Serious Cummins owners—from fleet operators running heavy towing loads to performance enthusiasts chasing reliable big-horsepower builds—recognize that investing in ARP head studs prevents catastrophic gasket failure, coolant intrusion, and the costly engine rebuilds that follow. Installation requires removing the cylinder head and using an ARP torque wrench to set studs to specification, but the investment pays dividends in engine stability and resale value. This kit is essential for any 5.9L 24V Cummins destined for long-term service, whether that's pulling a loaded trailer across the country or supporting consistent performance gains on the dyno.