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The Cometic MLS head gasket for Chevrolet Mark‑IV Big Block V8 (4.375in bore, .053in) uses multiple embossed stainless steel layers with Viton-coated outer faces and an uncoated shim center for adjustable thickness. The layered steel construction increases strength, resists corrosion and rebounds under load. It conforms clamp load across the sealing area to reduce bore distortion and provides consistent combustion sealing without added sealants.
Cometic Chevrolet Mark-IV Big Block V8 .053in MLS Cylinder Head Gasket - 4.375in Bore
