ARP Main Stud Kit - 12 Point Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Without Windage Tray - Ford Modular H77715FXXL 300" OD works well with

300" OD works well with our 26915 and 26918 Beehive valve springs in

and nylon reusable screw washers

Meets the higher fuel delivery demands in today's race engines

GM A-Body / G-Body 1973-83

1966-1968 Mercury Cyclone Base CID 289 Naturally Aspirated GAS

ARP Main Stud Kit - 12 Point Nuts - 4-Bolt Mains - Chromoly - Black Oxide - Without Windage Tray - Ford Modular H77715FXXL 300" OD works well withARPs 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 12 Point Nuts