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Cometic MLS cylinder head gasket for GM LS Gen-3/4 small-block V8 engines with a 3.970-inch bore and 0.051-inch compressed thickness. Embossed stainless steel outer layers coated in Viton provide durable sealing without additional sealants. The uncoated center shim supports thickness variation; MLS construction conforms load distribution, copes with aluminum-to-aluminum or aluminum-to-iron shearing, and reduces required clamp load to limit bore distortion. Viton coating withstands temperatures to 250°C (482°F).
Cometic GM LS1 SB 3.970 inch Bore .051 inch MLS Head Gasket
