ARP 145-5404 Main Cap Stud Kit Chrome Moly - 8740 2-Bolt

The ARP 145-5404 is a precision-engineered main cap fastener kit designed to secure engine main bearing caps with superior clamping force and reliability. This 2-bolt main stud kit eliminates common problems like main cap walk and fretting while protecting the threads in your engine block.

Key Features:

• Manufactured from 8740 chrome moly steel for exceptional 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 proper load distribution
• Thread rolling after heat-treatment creates superior fatigue resistance compared to cut threads
• Designed to meet the exacting standards of professional engine builders

ARP main studs provide a significant upgrade over OEM fasteners by offering consistent and repeatable torque values, critical for high-performance and competition engine builds. The superior material and manufacturing process ensures your main caps remain securely fastened under extreme cylinder pressures and loads.