ARP 154-5405 Main Stud Kit for Main Applications - 2-Bolt

ARP main stud kits deliver critical engine block reinforcement by eliminating main cap walk and fretting while protecting valuable engine block threads. This 2-bolt main stud kit provides a premium upgrade over factory fasteners for high-performance and competition applications.

Superior Construction and Materials:

• 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, delivering 1000% stronger threads than conventional fasteners
• Includes hardened parallel-ground washers for even load distribution and accurate torque readings
• High-quality nuts included for complete installation

Engineering Advantages:

ARP studs feature generous under-head radius and rolled threads for superior fatigue life and reliability. The threads are rolled after heat-treating rather than before, which significantly extends fatigue life compared to standard main fasteners. Some applications include specially designed standoff studs with serrated lock nuts for secure windage tray mounting.

Professional engine builders rely on ARP main fasteners to meet the demanding standards of competition engines. Whether you need studs or bolts, ARP provides the quality and engineering required for serious performance applications.