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The Cometic MLS cylinder head gasket for Chevrolet 348/409 W-Series Big Block V8 (.060in nominal, 4.375in bore) uses multiple embossed stainless steel layers to provide superior sealing for high-output engines. Viton-coated outer layers resist heat and harsh sealing conditions while the uncoated center shim can be varied to meet thickness needs. No sealants required; the gasket tolerates aluminum-to-iron combinations, resists corrosion and helps minimize bore distortion under clamp load.
Cometic Chevrolet 348/409 W-Series Big Block V8 .060in MLS Cylinder Head Gasket - 4.375in Bore
