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Fluidampr harmonic balancer adapter hub for externally balanced BBC Chevy 454–502ci engines accepts dual 3/16" keyways and fits Fluidampr part numbers #800111 and #80254E. Supplied as the hub only, it provides the correct keyway pairing for the externally balanced Big Block Chevy configurations referenced in the product details.
Fluidampr BBC Ext Balanced Dual (3/16in & 3/16in) Keyway Harmonic Balancer Adapter Hub (Hub Only)
