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Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 with a 4.630‑inch bore and 0.045" compressed operating thickness. Built from multiple embossed stainless steel layers, the outer faces are Viton‑coated for heat and chemical resistance so the gasket seals high‑output engines without sealants. An uncoated stainless shim layer adds rebound and corrosion resistance while reduced clamp load helps limit bore distortion.
Cometic GM Gen-V/VI Big Block V8 .045in MLS Cylinder Head Gasket - 4.630in Bore
