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 0.060 in. It provides reliable sealing for high-output engines without the need for sealants and fits both aluminum and cast-iron block combinations. Embossed stainless steel outer layers coated with Viton and an uncoated shim center offer corrosion resistance, load rebound, even sealing load distribution, and reduced clamp load to help limit bore distortion.
Cometic GM LS Gen-3/4 Small Block V8 .060in MLS Cylinder Head Gasket - 4.000in Bore