ARP 151-5401 Main Cap Fasteners Kit for Mains - 2-Bolt

ARP main cap fasteners provide the ultimate solution for securing main caps in high-performance and racing engines. This main stud kit is designed for 2-bolt main applications and addresses critical issues including main cap walk, fretting, and thread damage in engine blocks.

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 threads than conventional fasteners
• Complete kit includes hardened parallel-ground washers and high-quality nuts
• Eliminates main cap walk and fretting that can lead to engine failure
• Protects valuable engine block threads from damage during installation and removal

ARP's proprietary manufacturing process rolls threads after heat-treating rather than before, resulting in significantly longer fatigue life compared to standard fasteners. This main stud kit meets the exacting standards demanded by professional engine builders and is ideal for both high-performance street engines and full competition applications. The included parallel-ground washers ensure proper load distribution and consistent torque values.