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Cometic MLS head gasket for Chevrolet Mark-IV Big Block V8 (4.375-inch bore, .030-inch compressed thickness) uses multiple stainless steel layers with embossed outer faces coated in Viton to resist heat and seal harsh environments without sealants. The MLS construction reduces clamp load requirements and bore distortion while improving load distribution, making it suitable for high-output big-block applications where durable sealing is essential.
Cometic Chevrolet Big Block 396/402/427/454 4.375in Bore .030in Thick MLS-5 Head Gasket
