ARP 233-5602 Main Cap Fasteners 4-Bolt Stud Kit

The ARP 233-5602 main cap fastener kit provides professional-grade engine block reinforcement to eliminate main cap walk and fretting while protecting block threads. This complete 4-bolt main stud kit delivers the strength and reliability demanded by performance and competition engine builds.

Key Features:

• Manufactured from premium 8740 chrome moly steel for maximum strength
• 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
• Includes hardened parallel-ground washers and high-quality nuts
• Complete 4-bolt main configuration for superior clamping force
• Provisions for windage tray mounting with specially designed standoff studs and serrated lock nuts

ARP's post-heat-treat thread rolling process creates fasteners with dramatically improved fatigue life compared to pre-heat-treat threaded bolts. The generous under-head radius and precision manufacturing ensure consistent torque values and reliable engine assembly. Each component is engineered to meet the exacting standards of professional engine builders working on high-performance and racing applications.