ARP 234-5604 Main Cap Fasteners Kit - 4-Bolt Main Stud Kit

The ARP 234-5604 Main Cap Fastener Kit delivers race-proven reliability for high-performance and competition engine builds. This 4-bolt main stud kit eliminates main cap walk and fretting while protecting the threads in your engine block, ensuring maximum crank support under extreme loads.

Key Features:

• Manufactured from premium 8740 chrome moly steel for superior strength and durability
• Heat-treated in-house to 200,000 psi tensile strength for maximum clamping force
• Precision J-form threads rolled after heat-treat, providing 1000% stronger threads than conventional fasteners
• Includes hardened parallel-ground washers and high-quality nuts for optimal load distribution
• Select applications feature specially designed standoff studs with serrated lock nuts for secure windage tray mounting
• Rolled threads after heat-treating provide approximately 1000% longer fatigue life than pre-threaded fasteners
• Generous under-head radius design reduces stress concentration points

Engineered to meet the exacting standards of professional engine builders, this main stud kit provides the ultimate insurance against main cap failure in high-horsepower applications. ARP's proprietary manufacturing process and stringent quality control ensure consistent, reliable performance in the most demanding racing environments.