ARP 240-5501 Main Cap Stud Kit 2-Bolt with Windage Tray

The ARP 240-5501 Main Cap Stud Kit is engineered for high-performance and competition engines equipped with 2-bolt main caps and windage trays. This comprehensive kit delivers superior clamping force and reliability compared to factory hardware, eliminating main cap walk and fretting while protecting engine block threads.

Key Features:

• Manufactured from premium 8740 chrome moly steel for exceptional strength and durability
• Heat-treated in-house to 200,000 psi tensile strength for maximum reliability
• Precision J-form threads rolled after heat-treating provide 1000% stronger threads than conventional fasteners
• Specially designed standoff studs with serrated lock nuts for secure windage tray mounting
• Includes hardened parallel-ground washers and high-quality nuts for proper installation
• Compatible with 2-bolt main cap configurations with windage tray provisions

ARP main studs provide professional engine builders with the fastener technology needed to handle extreme cylinder pressures and crankshaft loads. The rolled thread process creates a smoother, stronger surface that resists fatigue and galling, while the generous under-head radius reduces stress concentrations. Each component is manufactured to exacting tolerances to ensure consistent torque values and long-term reliability in demanding racing and performance applications.