Fluidampr BBC Ext Balanced Dual (3/16in & 1/4in) Keyway Harmonic Balancer Adapter Hub (Hub Only)

Repeat damper removal and installation can reduce vibration control. Maintain recommended Fluidampr press fit of 0.0005" - 0.0015". Fits Fluidampr #800181 and #80252E. Chevy 454-502ci Big Bock, externally balanced, dual keys (3/16" and 1/4").