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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 0.045-inch compressed thickness. Multiple embossed stainless steel layers use Viton-coated outer faces to seal reliably without auxiliary sealants. The uncoated center shim allows tailored thickness; MLS design evens load across the sealing surface, withstands shearing at dissimilar-material joints, lowers clamp load needs and helps reduce bore distortion. Viton coating rated to 250°C (482°F).
Cometic GM LS1 SB 3.970 inch Bore .045 inch MLS Head Gasket
