Mopar Main Stud Kit - 5.9/6.7L Diesel

The ARP Mopar Main Stud Kit for 5.9/6.7L Diesel engines is designed for operators and enthusiasts who demand reliability under extreme load conditions. This kit is specifically engineered for Dodge Cummins diesel platforms, enhancing the factory two-bolt mains with ARP's industry-standard fastening solution. It is ideal for both stock and tuned applications, addressing critical weak points in high-output diesel engine architecture.

Constructed from chromoly steel with a black oxide finish, this main stud kit delivers superior clamping force and fatigue resistance compared to OEM bolts. The 12-point nut design ensures precise preload torque application, minimizing the risk of rounding during installation and future servicing. This kit is essential for maintaining engine integrity under high combustion pressures and boost levels.

Diesel technicians and performance builders recognize ARP studs as the industry standard for Cummins platforms. The kit is compatible with the factory two-bolt main configuration, requiring no block modifications while providing the necessary strength for dependable operation at elevated power levels. Proper installation with ARP's recommended assembly lube is crucial for long-term engine performance.