ARP Main Bolt Kits | Multiple Buick Fitments (125-5201)

The ARP Main Bolt Kit is a high-performance fastener set designed for demanding engine applications. Crafted from forged 8740 chromoly steel, these bolts are rated at 190,000 psi, ensuring exceptional strength and durability under extreme conditions. Engineered for competition engines and professional builds, they feature a reduced wrenching head, large underhead radius, and rolled threads that significantly enhance fatigue resistance. The heat-treated rolled threads provide approximately 2,000 percent better fatigue strength than standard fasteners, making them ideal for high-stress environments. These bolts deliver reliable clamping force and structural integrity, contributing to optimal engine performance and longevity in racing or high-performance street use.

This bolt kit is suitable for multiple Buick models with specific fitment requirements, designed to meet the exacting standards of professional engine builders. They are intended for use in applications where maximum strength and reliability are critical, such as competition or high-performance builds. Installation involves a direct bolt-on process, replacing factory fasteners with these upgraded ARP bolts for enhanced safety and performance. The kit includes all necessary main bolts, ensuring a straightforward upgrade for engines requiring high-strength fasteners. Suitable for use in street, track, or racing environments, these bolts provide peace of mind during extreme driving conditions.