ARP 154-5602 Main Cap Stud Kit 4-Bolt with Windage Tray

The ARP 154-5602 main cap stud kit is engineered to eliminate main cap walk and fretting while protecting engine block threads in high-performance and competition applications. This complete kit includes hardened parallel-ground washers, high-quality nuts, and specially designed standoff studs with serrated lock nuts for secure windage tray mounting on 4-bolt main configurations.

Premium Construction and Strength:

• Manufactured from 8740 chrome moly steel for exceptional durability
• Heat-treated in-house to 200,000 psi tensile strength
• Precision J-form threads rolled after heat-treatment for 1000% stronger threads compared to standard fasteners
• Hardened parallel-ground washers included for optimal clamping force distribution

Key Features:

• Complete main stud kit for 4-bolt main engine blocks
• Includes provisions for windage tray installation
• Specialty standoff studs with serrated lock nuts securely position and lock windage tray
• Superior fatigue life compared to OEM main fasteners
• Precision-engineered to meet professional engine builder standards

ARP main studs provide the reliability and clamping force needed for demanding racing and performance engine builds, ensuring consistent torque values and preventing fastener failure under extreme conditions.