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Cometic MLS head gasket for AMC 390/401 Gen‑3 V8 engines with a 4.250 inch bore and 0.040 inch compressed thickness. Built from multiple embossed stainless steel layers with Viton-coated outer faces and an uncoated stainless shim, it seals high-output engines without sealants. Suitable for differing head and block material pairings, the gasket resists corrosion, rebounds under load and helps distribute clamp forces across the sealing area.
Cometic AMC 390 70 / 401 72-74 4.250in Bore .040 inch MLS Head Gasket
