ARP 247-5402 Main Cap Stud Kit Chrome Moly - 2-Bolt 8740

The ARP 247-5402 main stud kit is engineered for high-performance and competition engines requiring superior main cap retention. This 2-bolt main configuration eliminates main cap walk and fretting while protecting valuable engine block threads during assembly and disassembly.

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, providing 1000% stronger threads than conventional fasteners
• Includes hardened parallel-ground washers and high-quality nuts for proper load distribution
• Select applications feature standoff studs with serrated lock nuts for secure windage tray mounting
• Rolled threads after heat-treating dramatically increases fatigue life and resistance to stress cracking

ARP main studs provide the professional engine builder with a reliable fastening solution that maintains precise main cap alignment under extreme cylinder pressures and crankshaft loads. The superior thread engagement and consistent torque values ensure repeatable assembly and long-term reliability in both street and racing applications.