ARP Harmonic Balancer Bolt - 1/2-20 in Thread - 1.550 in Long - 13/16 in 12 Point Head - Chromoly - Black Oxide - Big Block Chevy Water Pumps 540 in Bolt Centers

540 in Bolt Centers

the product that got Seals-it onto the manufacturing business many years ago

As-Cast Runner Cross-Sectional Area - Tapered 4

These springs will your 1964-1972 GM A-body

ARP Harmonic Balancer Bolt - 1/2-20 in Thread - 1.550 in Long - 13/16 in 12 Point Head - Chromoly - Black Oxide - Big Block Chevy Water Pumps 540 in Bolt CentersARPs 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: Harmonic Balancer Bolt 1 2