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Cometic Gaskets .040" MLS Head Gasket for Jeep Wagoneer 1974-1978, 4.250" Bore
$96.54

If you're diving into the world of high-performance engines, you know how crucial a solid head gasket is. That's where the COMETIC MLS (Multi-Layer Steel) Head Gasket comes into play. These gaskets are built for serious power, designed to handle the demands of today's high-output engines without needing any sealants. Trust me, when you're pushing your ride to the limit, you want something that won't let you down.

What I love about these MLS gaskets is their versatility. They're perfect for setups with aluminum heads on aluminum blocks or even aluminum heads on cast iron blocks. The way they handle the shearing forces between different materials is impressive. Made from multiple layers of stainless steel, these gaskets pack a punch in terms of strength. Plus, they rebound nicely, which is essential for maintaining a tight seal over time.

Now, let’s talk about the materials. The outer layers are embossed and coated with Viton, a tough rubber-like material that can take the heat—up to 250°C (482°F) to be exact. This stuff is designed for harsh conditions, so you can rest easy knowing it can handle whatever your engine throws at it. The center layer, which is uncoated stainless steel, can be adjusted for various thickness needs, making it a flexible choice for different builds.

Specifically, this gasket is tailored for the AMC 390/401 V8 engines, with a gasket bore of 4.250 inches and a compressed thickness of .040 inches. It's a solid fit for a range of American Motors vehicles, including classics like the Ambassador and Javelin, as well as some Jeep models like the CJ5 and Wagoneer.

  • Bore Diameter: 4.250"
  • Engine: AMC 390/401 V8
  • Thickness: .040"

In terms of fitment, this gasket works with a variety of models, such as:

  • American Motors Ambassador (1958-1963 & 1966-1974)
  • American Motors Javelin (1968-1974)
  • Jeep Cherokee (1974-1983)
  • Jeep CJ7 (1976-1981)
  • And many more!

So, if you're looking to seal the deal on your engine rebuild or upgrade, the COMETIC MLS Head Gasket is a no-brainer. It’s tough, reliable, and ready to handle the heat—just like your engine.

Other Part Numbers:
Cometic Gaskets #cgsC5937-040

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Vehicle Make/Model
American Motors AMX 1968-1970, 1978-1979 Base
American Motors Ambassador 1958-1961 Super
American Motors Ambassador 1958-1962 Custom
American Motors Ambassador 1959-1962 Deluxe
American Motors Ambassador 1961 Custom 400
American Motors Ambassador 1962 400
American Motors Ambassador 1963, 1966-1967 990
American Motors Ambassador 1963 800
American Motors Ambassador 1963, 1966-1967 880
American Motors Ambassador 1966-1971 DPL
American Motors Ambassador 1968-1970 Base
American Motors Ambassador 1968-1972 SST
American Motors Ambassador 1971-1974 Brougham
American Motors American 1966-1968 440
American Motors American 1966-1968 220
American Motors American 1966-1968 Rogue
American Motors Classic 1966 770
American Motors Classic 1966 550
American Motors Concord 1978-1979 Base
American Motors Concord 1979 Limited
American Motors Concord 1979 DL
American Motors Gremlin 1972-1976 Base
American Motors Gremlin 1976 Custom
American Motors Hornet 1970-1971, 1973-1977 Base
American Motors Hornet 1970-1972 SST
American Motors Hornet 1971-1977 Sportabout
American Motors Hornet 1971 SC/360
American Motors Hornet 1977 AMX
American Motors Javelin 1968-1972 SST
American Motors Javelin 1968-1974 Base
American Motors Javelin 1970 SST Mark Donohue
American Motors Javelin 1970 SST Trans Am
American Motors Javelin 1971-1974 AMX
American Motors Marlin 1967 Base
American Motors Matador 1971-1978 Base
American Motors Matador 1974 Brougham
American Motors Matador 1974 X
American Motors Pacer 1978 Base
American Motors Pacer 1979 Limited
American Motors Pacer 1979 DL
American Motors Rambler 1969 440
American Motors Rambler 1969 Rogue
American Motors Rambler 1969 Hurst SC/Rambler
American Motors Rambler 1969 Base
American Motors Rebel 1967-1968 550
American Motors Rebel 1967-1970 SST
American Motors Rebel 1967-1968 770
American Motors Rebel 1969-1970 Base
American Motors Rebel 1970 The Machine
American Motors Rogue 1966 Base
American Motors Spirit 1979 Base
Jeep CJ5 1971-1981 Base
Jeep CJ5 1975-1981 Renegade
Jeep CJ5 1977-1980 Golden Eagle
Jeep CJ5 1980-1981 Laredo
Jeep CJ6 1971-1975 Base
Jeep CJ7 1976-1981 Renegade
Jeep CJ7 1976-1981 Base
Jeep CJ7 1977-1979 Golden Eagle
Jeep CJ7 1980 Golden Hawk
Jeep CJ7 1980-1981 Laredo
Jeep Cherokee 1974-1983 Base
Jeep Cherokee 1974-1980 S
Jeep Cherokee 1975-1983 Wide Track Chief
Jeep Cherokee 1978-1980 Wide Track
Jeep Cherokee 1979-1980 Wide Track Golden Eagle
Jeep Cherokee 1980-1983 Wide Track Laredo
Jeep Cherokee 1980 Wide Track Limited
Jeep Cherokee 1981-1982 Chief
Jeep Cherokee 1981 Laredo
Jeep Cherokee 1983 Pioneer
Jeep Wagoneer 1972-1983 Base
Jeep Wagoneer 1973-1976 Custom
Jeep Wagoneer 1979-1983 Limited
Jeep Wagoneer 1982-1983 Brougham
Jeep Wagoneer 1983 Alpina

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Who is Cometic?

Cometic is a company known for manufacturing gaskets and engine seals for different engines. They cater to various industries such as the marine, industrial, agricultural, and automotive sectors. The company was established back in 1989 and has since provided high performance sealing solutions worldwide.

Motorsport Participation

The company is considered as the leading supplier when it comes to gaskets and seals worldwide. They have provided high-performance gaskets in various racing events such as NASCAR, GNCC, and AMA. They helped top racing teams compete at the highest level by improving engine reliability.

Built for Extreme Performance

Whether you are into endurance races at more than 220mph or setting the fastest drag records in 2000 hp top fuel race cars, Cometic has the right product for you. They design their products to withstand extreme temperatures and pressures. Hence, they are the brand chosen by the best in motorsports.

Best Value of Product

Cometic has always been dedicated to providing high-quality products that provide customer satisfaction. They have always given their customers the best product at the most competitive price. 

Quality in Every Product

The company is housed in a 70,000 square foot facility with state-of-the-art manufacturing equipment that helps them create products that are superior compared to its competitors. Using premium materials, they are able to develop gaskets that provide proper seals every time. 

Purchase Cometic Products at Vivid Racing

If you are in search of a high-quality gasket for your engine, then Cometic is the brand for you. Designed for OEM or high-performance applications, Cometic has got you covered. To know more about them, visit Vivid Racing and check out their list of products that fit your needs.












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