BBM Main Bolt Kit - Fits 426 Hemi 2-Bolt

The ARP BBM Main Bolt Kit for the 426 Hemi 2-bolt configuration is purpose-built for high-performance engine builders and serious engine work requiring OEM-spec reliability with upgraded material properties. This main bolt kit serves as a drop-in replacement for factory fasteners in Mopar 426 Hemi applications, addressing the critical need for consistent clamping force and fatigue resistance under extreme power levels. Whether you're restoring a classic muscle car or building a competition engine, this kit provides the foundation for structural integrity.

Manufactured from premium chromoly steel with black oxide finish, the BBM Main Bolt Kit delivers superior tensile strength and corrosion resistance compared to stock fasteners. The cross-bolt design distributes clamping loads evenly across the main bearing saddle, reducing stress concentration and preventing main cap walk—a critical failure point in high-RPM or high-boost applications. Black oxide coating protects against oxidation while maintaining consistent friction characteristics during installation, ensuring predictable torque-to-yield readings. Each hex-head bolt is engineered to ARP's exacting tolerances for precise fit and reliable performance.

Engine builders, race teams, and restoration specialists rely on this main bolt kit when the stakes demand uncompromising fastener quality. The 2-bolt main configuration is standard on 426 Hemi engines, making this kit the direct-fit solution for both stock-appearing builds and high-output applications. Installation requires standard socket wrenches and a torque wrench calibrated to ARP specifications—consult your engine manual or ARP's installation guide for precise torque values. This kit weighs 3.36 lbs and ships ready to use with no additional preparation required.