Securely install your Mustangs main caps by replacing that old weak stock factory hardware with high strength ARP Fasteners. ARP Fasteners are ideal for high performance street and track Mustangs.Premium Quality.
Made in the USA from 8740 chromoly steel with a black oxide finish to resist corrosion, these ARP High-Performance Series Main Cap Side Bolts are hardened to a tensile strength of 200,000 psi to provide superior strength for long-lasting performance. They feature a wide-area flange to provide even load distribution during torquing.Application.
This ARP Main Cap Side Bolt Kit is designed for use on cast iron M9 Ford Racing Boss 5.0L engine blocks. Includes Side bolts only.