ARP 230-5401 Main Cap Stud Kit Chrome Moly - 2-Bolt

The ARP 230-5401 main cap fastener kit is engineered to eliminate main cap walk and fretting while protecting critical engine block threads. This 2-bolt main configuration provides superior clamping force and reliability for high-performance and competition applications.

Key Features:

• Manufactured from 8740 chrome moly steel for exceptional strength and durability
• Heat-treated in-house to 200,000 psi tensile strength
• Precision J-form threads rolled after heat-treat for 1000% stronger thread life
• Hardened parallel-ground washers included for even load distribution
• High-quality nuts designed for precise torque application
• Forged construction with generous under-head radius for maximum reliability

ARP's post-heat-treat thread rolling process creates fasteners with significantly longer fatigue life compared to conventional bolts threaded before heat treatment. This main stud kit meets the exacting standards demanded by professional engine builders and is ideal for both street performance and racing applications where engine integrity is critical.