ARP 206-5403 Main Stud Kit for Main Engine Blocks - 2-Bolt

The ARP 206-5403 Main Stud Kit is engineered for 2-bolt main engine blocks, delivering superior clamping force and reliability for high-performance and racing applications. This comprehensive kit eliminates common issues like main cap walk and fretting while protecting critical engine block threads.

Key Features:

• Manufactured from premium 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 provide 1000% stronger fatigue life compared to conventional fasteners
• Includes hardened parallel-ground washers and high-quality nuts for proper load distribution
• Select applications feature specially designed standoff studs with serrated lock nuts for secure windage tray mounting
• Generous under-head radius design reduces stress concentrations

ARP main studs are the preferred choice of professional engine builders who demand the highest level of reliability and performance. By replacing factory main cap fasteners with this precision-engineered stud kit, you ensure consistent main bearing cap alignment and improved bottom-end strength for demanding racing and performance applications.