ARP GM LS7 Balancer Bolt Kit - 12 Point 55 an extra O-ring

an extra O-ring

1-7/8 in ID

2002-2012 Cadillac Escalade EXT

2007-2008 Chevrolet Avalanche

1999-2018 Ford F-350 Super Duty

ARP GM LS7 Balancer Bolt Kit - 12 Point 55 an extra O-ringARPs 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 16