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The Cometic MLS head gasket for GM LS Gen-3/4 small block V8 (4.000 in bore) is a multi-layer steel cylinder head gasket with a compressed operating thickness of 0.049 in. It seals high-output engines without sealants and supports aluminum-to-aluminum or aluminum-to-iron installations. Built from embossed stainless steel outer layers coated with Viton and an uncoated center shim, the gasket resists corrosion, rebounds under load, conforms sealing load across the area, and requires less clamp load to reduce bore distortion.
Cometic GM LS Gen-3/4 Small Block V8 .049in MLS Cylinder Head Gasket - 4.000in Bore
