6.75" 455" Oldsmobile Harmonic Balancer - Externally Balanced

The dampers for the Oldsmobile 455 engines feature an OEM 4-bolt pulley pattern and male pulley register. The dampers have OEM offset. The #501 damper is designed for use with the OEM external balanced crankshaft. The damper may be used with an internal balance crankshaft by removal of the bolted on counter weight. To purchase a new damper that is internally balanced, please view damper part #502.

• Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.