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The Cometic MLS head gasket for AMC 390/401 Gen-3 V8 (4.250 in bore, 0.051 in compressed thickness) combines embossed stainless steel outer layers coated in Viton with an uncoated shim layer. That layered construction rebounds under load, resists corrosion and accommodates differing head/block materials, improving seal reliability and distributing clamp forces to reduce bore distortion in high-output applications.
Cometic AMC 390/401 Gen-3 V8 .051in MLS Cylinder Head Gasket - 4.250in Bore
