Holley OEM Harmonic Balancer - 7.5 in OD - Internal Balance - GM LS-Series HLY558-471 which is ideal for use

which is ideal for use with most electronic fuel injection systems

(25) 5/16"

Each pump individually tested

Specification 913D also includes higher soot handling capacity compare to 913C

Holley OEM Harmonic Balancer - 7.5 in OD - Internal Balance - GM LS-Series HLY558-471 which is ideal for useHarmonic Balancer; Damper Hub Assembly; 1. 48 in. Inside 7. 5 in. Outside Diameter; Black; Product Description: Harmonic Balancer OEM 7. 500 in OD Internal Balance Non SFI Steel Black Paint GM LS Series Holley Performance Products makes the most famous carburetors in racing. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCARA NextelA Cup team and every NHRAA Proa"Stock champion. The Holley