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Cometic's .080 inch MLS head gasket for Chevrolet 348/409 W-Series Big Block V8 (4.200 in bore) employs multiple embossed stainless steel layers with Viton-coated outer faces to withstand harsh sealing environments. The MLS construction offers rebound and corrosion resistance and seals aluminum-to-iron interfaces without additional sealants. The center shim layer can be varied to meet specific thickness needs and help reduce bore distortion and clamp load.
Cometic Chevrolet 348/409 W-Series Big Block V8 .080in MLS Cylinder Head Gasket - 4.200in Bore
