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The Cometic MLS cylinder head gasket for Chevrolet Mark‑IV Big Block V8 features multi-layer stainless steel construction with embossed outer faces coated in Viton. At a compressed thickness of 0.120" and 4.320" bore, it seals modern high-output engines without additional sealants. The center shim is uncoated stainless steel to meet thickness needs while helping distribute clamp load and limit bore distortion.
Cometic Chevrolet Mark-IV Big Block V8 .120in MLS Cylinder Head Gasket - 4.320in Bore
