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The Cometic MLS head gasket for Chevrolet Mark‑IV GM Gen‑V/VI Big Block V8 (4.570" bore, .095" compressed thickness) uses multiple embossed stainless steel layers with Viton-coated outer faces to seal high-output engines without sealants. Its uncoated center shim layer allows thickness variation and undersized water ports accommodate aftermarket head customization. The multilayer construction resists corrosion, rebounds under load and helps reduce bore distortion by requiring less clamp load.
Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .095in MLS Cylinder Head Gasket - 4.570in Bore
