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The Cometic MLS head gasket for Chevrolet Mark‑IV Big Block V8 (4.320" bore, .045" compressed thickness) is a multi-layer steel gasket that provides a reliable combustion and coolant seal without sealants. Embossed outer layers are Viton-coated to meet harsh sealing and surface finish demands, while an uncoated stainless shim establishes thickness. MLS design rebounds, resists corrosion and evens load distribution to reduce bore distortion.
Cometic Chevrolet Mark-IV Big Block V8 .045in MLS Cylinder Head Gasket - 4.320in Bore
