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The Cometic MLS head gasket for Chevrolet Mark‑IV Big Block V8 (4.500in bore, .040in) employs multiple embossed stainless steel layers with Viton-coated outer faces for durable sealing. The uncoated center shim can be varied to meet thickness requirements, letting the gasket rebound and resist corrosion. Its construction spreads clamp load evenly to reduce bore distortion, meeting harsh sealing environments without the need for additional sealants.
Cometic Chevrolet Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.500in Bore
