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The Cometic MLS head gasket for AMC 390/401 Gen-3 V8 (4.250 in bore, specified compressed thickness) employs embossed stainless steel outer layers coated with Viton and an uncoated center shim. The multi-layer design resists corrosion, rebounds under load and helps distribute clamp forces more evenly, reducing bore distortion and enhancing sealing performance between differing head and block materials.
Cometic AMC 390/401 Gen-3 V8 .056in MLS Cylinder Head Gasket - 4.250in Bore
