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Cometic MLS head gasket for GM Gen‑V/VI Big Block V8 with a 4.630‑inch bore and 0.140" compressed thickness. Built from multiple embossed stainless layers with Viton‑coated outer faces, it withstands harsh sealing conditions and elevated temperatures. The uncoated stainless shim layer provides adjustable thickness and rebound, and the MLS construction seals without additional sealants while evening load distribution to limit bore distortion.
Cometic GM Gen-V/VI Big Block V8 .140in MLS Cylinder Head Gasket - 4.630in Bore
