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Cometic's MLS cylinder head gasket for AMC 390/401 Gen-3 V8 features a 4.250 in bore and a quoted compressed thickness variant. Its multi-layer stainless steel build uses embossed outer layers with Viton coating to withstand harsh sealing environments and high temperatures. The center shim provides controlled thickness while the overall design improves sealing across aluminum-to-aluminum and aluminum-to-iron interfaces.
Cometic AMC 390/401 Gen-3 V8 .052in MLS Cylinder Head Gasket - 4.250in Bore
