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Cometic MLS head gasket for GM Gen V/VI big-block V8s is a multi-layer steel cylinder head gasket with a 4.630in bore and compressed thickness of 0.040". Its embossed outer stainless-steel layers are coated with Viton for heat resistance to 250°C (482°F), while the uncoated stainless shim layer provides dimensional options. MLS construction yields strong sealing without sealants for aluminum or cast-iron combinations.
Cometic Chevy BB 4.63in Bore .040 inch MLS 396/402/427/454 Head Gasket
