ARP Main Stud Kits | Multiple Buick Fitments (123-5401)

The ARP Main Stud Kits are high-performance fasteners designed to secure engine main caps and prevent cap walk or fretting during operation. Crafted from 8740 chromoly steel and heat-treated in-house to achieve a tensile strength of 190,000 psi, these studs provide exceptional durability and strength under demanding conditions. The precision J-form threads are rolled after heat treatment, resulting in stronger, more reliable threads compared to standard fasteners. The kits include hardened, parallel-ground washers and high-quality nuts, ensuring a secure and consistent fit. These main stud kits are engineered to enhance engine integrity, especially in high-stress applications, offering peace of mind during aggressive driving or racing.

Designed for a variety of Buick models, these ARP main stud kits are suitable for engines requiring a robust fastening solution. They are compatible with multiple Buick fitments, providing a direct replacement for factory fasteners. Ideal for performance builds, street use, or track applications, these studs help maintain proper main cap alignment and prevent engine damage under high loads. Installation involves replacing the stock main bolts with these high-strength studs, ensuring a secure fit. The kit includes all necessary components for a complete upgrade, making it a reliable choice for engine builders seeking enhanced strength and reliability.