ARP Hex Nuts Main Stud Kit 4-Bolt Mains 2070091 usually resulting in the highest

usually resulting in the highest horsepower and torque gains out of all aFe’s filter media options

600 exhaust valves this head moves tremendous volumes of air through conservative runner volumes

Steel spacer is 1/4" thick

Premium Hardware:

ARP Hex Nuts Main Stud Kit 4-Bolt Mains 2070091 usually resulting in the highestARPs 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 4