ARP Main Stud Kits | Multiple Mini Fitments (206-5403)

The ARP Main Stud Kits are high-performance fasteners designed to secure engine main caps and prevent cap walk or fretting during operation. Constructed from 8740 chromoly steel and heat-treated in-house to achieve a 190,000 psi tensile-strength rating, these studs provide exceptional strength and durability. The precision J-form threads are rolled after heat treatment, resulting in significantly stronger threads compared to standard fasteners. The kits include hardened, parallel-ground washers and high-quality nuts, ensuring reliable clamping force and long-term performance. These main stud kits are engineered to enhance engine integrity under high-stress conditions, making them ideal for performance builds and demanding applications.

Designed for a variety of mini fitments, these ARP main stud kits are suitable for engines requiring a robust fastening solution. They are compatible with multiple engine configurations and are intended as direct replacements or upgrades for stock fasteners. The kits are suitable for street, track, or racing applications where maintaining proper main cap alignment and preventing thread damage are critical. Installation involves replacing existing main bolts with these high-strength studs, washers, and nuts, providing a secure and reliable connection. These studs are an essential upgrade for performance engines subjected to increased loads or high RPM operation.