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The Cometic MLS head gasket for Chevrolet Mark‑IV Big Block V8 (4.375in bore, .027in) is formed from multiple embossed stainless steel layers with Viton-coated outer surfaces. The uncoated center shim allows tailored thickness while the layered construction resists corrosion and rebounds under load. It conforms load distribution across the sealing area, which reduces clamp load and limits bore distortion, providing effective sealing without the need for sealants.
Cometic Chevrolet Mark-IV Big Block V8 .027in MLS Cylinder Head Gasket - 4.375in Bore
