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Cometic's copper head gasket for Chevrolet Mark‑IV big block V8s provides a .043" copper sealing surface for a 4.320" round bore application. The copper construction is specified to require less clamp load while embossed outer layers and a Viton coating help distribute clamp forces evenly. The gasket is supplied to seal without additional sealants or re-torque and to help minimize bore distortion when installed properly.
Cometic Chevy Big Block 4.320in Bore 0.043in Copper Round Bore Head Gasket
