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Cometic's .066 inch MLS head gasket for Chevrolet 348/409 W-Series Big Block V8 (4.437 in bore) features multiple embossed stainless steel layers with Viton-coated outer faces to withstand harsh sealing environments. The MLS construction provides rebound and corrosion resistance and seals aluminum-to-iron joints without sealants. A center shim layer accommodates thickness variation, improving load distribution and reducing clamp-induced bore distortion.
Cometic Chevrolet 348/409 W-Series Big Block V8 .066in MLS Cylinder Head Gasket - 4.437in Bore
