ARP 202-5406 Main Cap Stud Kit Main Chrome Moly - 2-Bolt

The ARP 202-5406 main cap fastener kit delivers professional-grade engine block reinforcement for high-performance and racing applications. This 2-bolt main stud kit eliminates main cap walk and fretting while protecting the threads in your engine block from damage during installation and removal.

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-treating for 1000% stronger threads than conventional fasteners
• Includes hardened parallel-ground washers and high-quality nuts for complete installation
• Superior fatigue life compared to OEM main bolts
• Designed to meet the exacting standards of professional engine builders

ARP's proprietary manufacturing process rolls threads after heat treatment rather than before, creating a fastener with dramatically improved fatigue resistance and thread strength. The generous under-head radius design reduces stress concentrations, while the precision-ground washers ensure even load distribution across the main cap surface. This kit provides the reliable bottom-end security demanded by competition engines and serious performance builds.