ARP 134-5203 Main Bolt Kit for Small Block Chevy World Products Motown Iron Block

Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. The ARP 134-5203 is specifically engineered for World Products Motown iron block small block Chevy applications, providing superior main cap retention for high-performance and racing engines.

Key Features:

• Forged from 8740 chrome moly steel with reduced wrenching head, large underhead radius and rolled threads
• Threads rolled after heat-treating provide 2000% better fatigue strength than most main bolts threaded prior to heat-treating
• High Performance Series rated at 180,000 psi tensile strength
• Hardened parallel-ground washers included with each kit
• Black oxide finish for corrosion resistance
• Application-specific design for World Products Motown iron blocks

This main bolt kit provides the ultimate in main cap security for high-horsepower small block Chevy builds using World Products Motown blocks. ARP's precision manufacturing and premium materials ensure reliable main bearing retention under extreme racing conditions.