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Cometic's .056 inch MLS head gasket for Chevrolet 348/409 W-Series Big Block V8 (4.437 in bore) combines multiple embossed stainless steel layers with Viton-coated outer faces for heat resistance and long-term sealing. The MLS construction rebounds to resist corrosion and seals dissimilar-metal joints without additional sealants. The center shim layer accommodates thickness variation and helps reduce clamp load and bore distortion.
Cometic Chevrolet 348/409 W-Series Big Block V8 .056in MLS Cylinder Head Gasket - 4.437in Bore
