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Cometic's MLS cylinder head gasket for AMC 390/401 Gen-3 V8 with a 4.250 in bore is built from multiple embossed stainless steel layers and features Viton-coated outer faces. The layered construction accommodates thickness variation through an uncoated shim, resists corrosion and shearing between dissimilar materials, and helps maintain seal integrity under clamp while limiting bore distortion in demanding engine setups.
Cometic AMC 390/401 Gen-3 V8 .066in MLS Cylinder Head Gasket - 4.250in Bore
