Buick Main Bolt Kit - Fits 455

The Buick Main Bolt Kit - Fits 455 is an essential component for engine builders and enthusiasts working with the iconic 455 big-block platform. This ARP fastener kit is designed to upgrade factory main cap bolts, ensuring reliable clamping force and block integrity, especially under high horsepower and high-RPM conditions.

Constructed from premium alloy steel and shot-peened for enhanced fatigue resistance, ARP main bolts offer superior tensile strength compared to OEM fasteners. The kit includes all necessary hardware for complete main cap installation, with each bolt meticulously manufactured to ensure consistent clamping load across the block. Proper torque and material quality are crucial for engine longevity and reliability.

This kit is indispensable for mechanics and engine builders working on Buick 455 engines, whether for muscle cars, trucks, or performance builds. It is particularly beneficial during full rebuilds, overbore work, or when upgrading internal components. Following ARP's recommended torque sequence is essential to achieve even clamping and prevent block warpage.