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Cometic AMC 390/401 Gen-3 V8.066in MLS Cylinder Head Gasket - 4.250in Bore

Take your engine's performance to the next level with Cometic's MLS Cylinder Head Gasket. Designed for AMC 390/401 Gen-3 V8 engines, this gasket provides maximum sealing performance and can withstand the demands of high-output engines.

Made from multiple embossed layers of stainless steel with a Viton rubber coating, this gasket is built to last and resist corrosion. Its compressed operating thickness is 0.098", ensuring a precise seal and optimal engine performance.

  • Coated on both sides with Viton for superior sealing performance
  • Ideal for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks
  • Withstands shearing force created by different materials
  • Increased strength and rebound resistance due to multiple layers of stainless steel

This product fits more vehicles than loaded. Please select your vehicle to see all fits.

Make Model Year Type
American Motors Ambassador 1958 Custom
American Motors Ambassador 1958 Super
American Motors Ambassador 1959 Custom
American Motors Ambassador 1959 Deluxe
American Motors Ambassador 1959 Super
American Motors Ambassador 1960 Base
American Motors Ambassador 1960 Custom
American Motors Ambassador 1960 Super
American Motors Ambassador 1961 Base
American Motors Ambassador 1961 Custom
American Motors Ambassador 1961 Custom 400
American Motors Ambassador 1961 Super
American Motors Ambassador 1962 400
American Motors Ambassador 1962 Base
American Motors Ambassador 1962 Custom
American Motors Ambassador 1963 880
American Motors Ambassador 1963 990
American Motors Ambassador 1963 Base
American Motors Ambassador 1966 990
American Motors Ambassador 1966 Base
American Motors Ambassador 1966 DPL
American Motors Ambassador 1967 990
American Motors Ambassador 1967 Base
American Motors Ambassador 1967 DPL
American Motors Ambassador 1968 Base
American Motors Ambassador 1968 DPL
American Motors Ambassador 1968 SST
American Motors Ambassador 1969 Base
American Motors Ambassador 1969 DPL
American Motors Ambassador 1969 SST
American Motors Ambassador 1970 Base
American Motors Ambassador 1970 DPL
American Motors Ambassador 1970 SST
American Motors Ambassador 1971 Brougham
American Motors Ambassador 1971 DPL
American Motors Ambassador 1971 SST
American Motors Ambassador 1972 Brougham
American Motors Ambassador 1972 SST
American Motors Ambassador 1973 Brougham
American Motors Ambassador 1974 Brougham
American Motors American 1966 440
American Motors American 1966 Base
American Motors American 1967 440
American Motors American 1967 Base
American Motors American 1967 Rogue
American Motors American 1968 440
American Motors American 1968 Base
American Motors American 1968 Rogue
American Motors AMX 1968 Base
American Motors AMX 1969 Base
American Motors AMX 1970 Base
American Motors AMX 1978 Base
American Motors AMX 1979 Base
American Motors Classic 1966 770
American Motors Classic 1966 Base
American Motors Concord 1978 Base
American Motors Concord 1979 Base
American Motors Concord 1979 DL
American Motors Concord 1979 Limited
American Motors Gremlin 1972 Base
American Motors Gremlin 1973 Base
American Motors Gremlin 1974 Base
American Motors Gremlin 1975 Base
American Motors Gremlin 1976 Base
American Motors Gremlin 1976 Custom
American Motors Hornet 1970 Base
American Motors Hornet 1970 SST
American Motors Hornet 1971 Base
American Motors Hornet 1971 SC/360
American Motors Hornet 1971 Sportabout
American Motors Hornet 1971 SST
American Motors Hornet 1972 Sportabout
American Motors Hornet 1972 SST
American Motors Hornet 1973 Base
American Motors Hornet 1973 Sportabout
American Motors Hornet 1974 Base
American Motors Hornet 1974 Sportabout
American Motors Hornet 1975 Base
American Motors Hornet 1975 Sportabout
American Motors Hornet 1976 Base
American Motors Hornet 1976 Sportabout
American Motors Hornet 1977 AMX
American Motors Hornet 1977 Base
American Motors Hornet 1977 Sportabout
American Motors Javelin 1968 Base
American Motors Javelin 1968 SST
American Motors Javelin 1969 Base
American Motors Javelin 1969 SST
American Motors Javelin 1970 Base
American Motors Javelin 1970 SST
American Motors Javelin 1970 SST Mark Donohue
American Motors Javelin 1970 SST Trans Am
American Motors Javelin 1971 AMX
American Motors Javelin 1971 Base
American Motors Javelin 1971 SST
American Motors Javelin 1972 AMX
American Motors Javelin 1972 Base
American Motors Javelin 1972 SST
American Motors Javelin 1973 AMX
American Motors Javelin 1973 Base
Cometic manufactures engine gaskets for both domestic and import vehicles. Gasket kits are available for both bottom end and top end for the most popular vehicles, while their MLS head gaskets are known to be some of the best in the industry. Cometic’s 70,000 square foot, state-of-the-art R&D and manufacturing facility allows them to design gaskets for engines using the latest technology, such as Multi-Layer Steel (MLS) gaskets as well as using synthetic blends such as Aramid Fiber.
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