BMC Rod Bolt Kit - Fits A&B Series Engines

The ARP BMC Rod Bolt Kit for A&B Series Engines is purpose-built for engine builders and performance enthusiasts who demand reliability under extreme operating conditions. Designed specifically for Honda and Acura A-series and B-series powerplants, this rod bolt kit replaces the factory fasteners with premium chromoly alternatives that resist stretching, fatigue, and catastrophic failure during high-rpm operation. Whether you're building a track-focused engine, upgrading a daily-driven performance car, or restoring a tuned platform, quality rod bolts are non-negotiable insurance against bottom-end failure.

This kit contains eight 8740 chromoly bolts with black oxide coating, sized at 11/32 inch diameter, engineered to ARP's exacting standards for preload consistency and tensile strength. Chromoly construction provides superior yield strength compared to stock steel, allowing bolts to maintain clamping force across wider temperature ranges and higher cylinder pressures encountered during forced induction, extended high-load shifts, or nitrous oxide applications. The black oxide finish offers corrosion resistance and appearance while the precision-manufactured threads ensure repeatable torque values and eliminate galling that can compromise bolt integrity over multiple engine builds or teardowns.

Serious engine builders and independent technicians trust ARP rod bolts for competitive racing engines, supercharged street cars, and high-revving builds where stock fasteners cannot guarantee safety margins. Installation requires standard automotive hand tools and a quality torque wrench—always follow ARP's published torque specifications and install sequence to ensure even load distribution across all eight bolts. This kit supplies the complete set needed for one engine, eliminating the need to source individual bolts and ensuring matching metallurgy across all connecting rod fasteners.