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Cometic MLS cylinder head gasket for GM LS Gen-3/4 small-block V8 engines with a 4.000-inch bore and 0.040-inch compressed thickness. Embossed stainless steel outer layers coated with Viton provide durable sealing without extra sealants. The uncoated center shim permits thickness variation; MLS design evens load distribution, handles aluminum-to-aluminum or aluminum-to-iron interfaces, lowers clamp load requirements and helps minimize bore distortion. Viton coating resists heat to 250°C (482°F).
Cometic GM LS1 SB 4.000 inch Bore .040 inch MLS Head Gasket
