ARP Main Stud Kit - Hex Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Girdle - Small Block Ford NMO-MT-15 High quality steel then zinc

High quality steel then zinc plated for a durable finish

The Three Stage Retard Control allows you to retard your ignition timing in three different stages

patented blend of high-performance fibers

Authentic OE gaskets

The 600 gear uses a 3/4"-30 spline U-Joint

ARP Main Stud Kit - Hex Nuts - 2-Bolt Mains - Chromoly - Black Oxide - Girdle - Small Block Ford NMO-MT-15 High quality steel then zincARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Main Stud Kit Hex Nuts 2