Cometic Chevrolet Mark-IV/GM Gen-V/VI Big Block V8 .040in MLS Cylinder 4.630in Bore
SKU C5434-040
MPN cgsC5434-040
$90.53 · Available to order
Cometic Chevrolet Mark-IV/GM Gen-V/VI Big Block V8 .040in MLS Cylinder 4.630in Bore
Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.040". Suitable for Brodix Big Duke/Brodie Head. Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.
| Years | Make | Model | Submodel | Drive |
|---|---|---|---|---|
| 1976 | Chevrolet | Impala | S | — |
| 1987–1988 | Chevrolet | R20 | Custom Deluxe | — |
| 1990 | Chevrolet | V2500 Suburban | Scottsdale | — |
| 1987–1988 | Chevrolet | R30 | Silverado | — |
| 1975–1985 | Chevrolet | P30 | Step-Van | — |
| 1976 | GMC | G35 | Rally STX | — |
| 1979 | GMC | P1500 | Base | — |
| 1979–1989 | GMC | P3500 | Value Van | — |
| 1968–1974 | Chevrolet | C20 Suburban | Base | — |
| 1988–1990 | GMC | C3500 | Sierra | — |
| 1989–1990 | GMC | G3500 | Rally Camper Special | — |
| 1987–1988 | Chevrolet | R20 Suburban | Silverado | — |
| 1975–1978 | GMC | P35 | Value Van | — |
| 1990 | Chevrolet | C1500 | WT | — |
| 1970–1974 | Chevrolet | Monte Carlo | Base | — |
| 1977–1978 | GMC | C15 | Heavy Half | — |
| 1973–1974 | GMC | P35/P3500 Van | Base | — |
| 1979–1989 | GMC | P3500 | Base | — |
| 1976–1978 | Chevrolet | K5 Blazer | Cheyenne | — |
| 1968–1974 | GMC | K15/K1500 Suburban | Base | — |
| 1979–1986 | GMC | K3500 | High Sierra | — |
| 1976–1977 | GMC | K25 Suburban | Sierra Classic | — |
| 1975–1980 | Chevrolet | C10 Suburban | Silverado | — |
| 1975–1976 | Chevrolet | Caprice | Classic Sport | — |
| 1968–1974 | GMC | K35/K3500 Pickup | Base | — |
| 1976 | GMC | Jimmy | Base | — |
| 1968 | Chevrolet | Chevelle | 300 | — |
| 1975–1980 | Chevrolet | C10 | Cheyenne | — |
| 1976 | GMC | G35 | Magnavan | — |
| 1987–1989 | GMC | R2500 Suburban | Sierra Classic | — |
| 1990 | Chevrolet | C1500 | Cheyenne | — |
| 1975–1978 | GMC | C15 Suburban | Sierra Grande | — |
| 1975–1978 | GMC | C15 | Sierra Classic | — |
| 1972 | Chevrolet | Camaro | Z28 | — |
| 1975–1980 | Chevrolet | C10 Suburban | Custom Deluxe | — |
| 1977–1978 | Chevrolet | K5 Blazer | Custom Deluxe | — |
| 1969–1972 | Chevrolet | Townsman | Base | — |
| 1977 | Chevrolet | K30 | Cheyenne | — |
| 1977 | Chevrolet | K30 | Scottsdale | — |
| 1967–1972 | Chevrolet | Chevelle | Concours | — |
| 1988–1990 | Chevrolet | K3500 | Scottsdale | — |
| 1985 | Chevrolet | K20 Suburban | Scottsdale | — |
| 1972–1974 | GMC | Sprint | Custom | — |
| 1975–1980 | Chevrolet | C20 Suburban | Scottsdale | — |
| 1982 | Chevrolet | C20 Suburban | Scottsdale | — |
| 1979–1982 | GMC | C3500 | Sierra Grande | — |
| 1975–1977 | Chevrolet | C20 Suburban | Silverado | — |
| 1990 | Chevrolet | V2500 Suburban | Silverado | — |
| 1988–1990 | GMC | K3500 | Sierra | — |
| 1968–1974 | GMC | C15/C1500 Suburban | Base | — |
| 1968–1974 | Chevrolet | K20 Suburban | Base | — |
| 1975–1976 | Chevrolet | G30 | Beauville | — |
| 1979 | Chevrolet | P20 | Step-Van | — |
| 1975–1976 | Chevrolet | Impala | Sport | — |
| 1975 | Chevrolet | Caprice | Estate Wagon | — |
| 1981 | Chevrolet | C30 | Deluxe | — |
| 1978–1980 | Chevrolet | C10 | Big Ten | — |
| 1976 | Chevrolet | K5 Blazer | Base | — |
| 1987–1988 | Chevrolet | R30 | Custom Deluxe | — |
| 1989 | Chevrolet | R2500 | Cheyenne | — |
| 1988–1990 | GMC | C3500 | Sierra SLE | — |
| 1973–1974 | GMC | G35/G3500 Van | Vandura | — |
| 1979–1986 | GMC | C2500 Suburban | Base | — |
| 1975–1978 | GMC | P35 | Base | — |
| 1988–1990 | Chevrolet | C3500 | Scottsdale | — |
| 1979–1980 | Chevrolet | K10 | Scottsdale | — |
| 1975–1986 | Chevrolet | C20 | Silverado | — |
| 1985 | Chevrolet | K20 Suburban | Silverado | — |
| 1988 | Chevrolet | R20 | Cheyenne | — |
| 1976 | Chevrolet | K10 | Scottsdale | — |
| 1987–1990 | GMC | V3500 | Base | — |
| 1979–1980 | Chevrolet | K10 | Silverado | — |
| 1975–1978 | GMC | C35 | High Sierra | — |
| 1973–1975 | Chevrolet | Laguna | Base | — |
| 1976 | GMC | G35 | Rally | — |
| 1976 | Chevrolet | G20 | Beauville | — |
| 1967 | Chevrolet | Camaro | Base | — |
| 1979–1980 | GMC | C1500 | Heavy Half | — |
| 1968–1974 | GMC | K15/K1500 Pickup | Base | — |
| 1970–1971 | GMC | P35/P3500 Van | Base | — |
| 1968–1974 | GMC | K25/K2500 Pickup | Base | — |
| 1975–1986 | Chevrolet | C30 | Silverado | — |
| 1976 | Chevrolet | G20 | Chevy Van | — |
| 1978 | Chevrolet | K5 Blazer | Silverado | — |
| 1975–1978 | GMC | C15 | Base | — |
| 1976–1977 | GMC | K25 Suburban | High Sierra | — |
| 1979–1980 | GMC | C1500 | Street Coupe | — |
| 1968–1974 | Chevrolet | C20 Pickup | Base | — |
| 1979–1982 | GMC | C2500 Suburban | Sierra Grande | — |
| 1979–1986 | GMC | K3500 | Base | — |
| 1976–1978 | GMC | K25 | Sierra Classic | — |
| 1970–1971 | Chevrolet | P20 Van | Base | — |
| 1979–1986 | GMC | C2500 | High Sierra | — |
| 1967–1972 | Chevrolet | Camaro | SS | — |
| 1976–1978 | GMC | K25 | Sierra Grande | — |
| 1965–1967 | Chevrolet | Chevelle | Base | — |
| 1979–1980 | GMC | K1500 | Sierra Classic | — |
| 1968–1969 | Chevrolet | Chevelle | 300 Deluxe | — |
| 1973 | Chevrolet | Monte Carlo | S | — |
| 1981 | Chevrolet | K30 | Deluxe | — |
| 1976 | GMC | G35 | Vandura | — |
| 1980 | Chevrolet | K20 | Custom Deluxe | — |
| 1989–1990 | Chevrolet | R3500 | Cheyenne | — |
| 1976 | GMC | Jimmy | Sierra Grande | — |
| 1987–1990 | GMC | R2500 Suburban | Base | — |
| 1979–1986 | GMC | C2500 Suburban | Sierra Classic | — |
| 1973 | Chevrolet | Chevelle | Deluxe | — |
| 1976 | Chevrolet | Caprice | Classic Estate | — |
| 1989–1990 | Chevrolet | R2500 Suburban | Scottsdale | — |
| 1967 | Chevrolet | Camaro | RS | — |
| 1973–1974 | Chevrolet | Blazer | Base | — |
| 1975–1978 | GMC | C15 | High Sierra | — |
| 1968–1975 | Chevrolet | El Camino | SS | — |
| 1989 | Chevrolet | R2500 | Scottsdale | — |
| 1973 | Chevrolet | P20 Van | Base | — |
| 1975–1978 | GMC | C15 Suburban | Base | — |
| 1987–1989 | GMC | R2500 | Base | — |
| 1989–1990 | Chevrolet | V3500 | Silverado | — |
| 1976 | GMC | K15 | Sierra Grande | — |
| 1979–1986 | GMC | K3500 | Sierra Classic | — |
| 1973 | Chevrolet | P10 Van | Base | — |
| 1988–1990 | Chevrolet | C3500 | Silverado | — |
| 1987–1988 | Chevrolet | R20 | Silverado | — |
| 1975–1978 | GMC | C25 | Sierra Grande | — |
| 1979–1980 | GMC | C1500 Suburban | Sierra Grande | — |
| 1968–1974 | Chevrolet | C30 Pickup | Base | — |
| 1982–1986 | Chevrolet | C20 Suburban | Silverado | — |
| 1975–1976 | Chevrolet | Impala | Custom | — |
| 1979–1986 | GMC | C2500 Suburban | High Sierra | — |
| 1979–1980 | GMC | K1500 | High Sierra | — |
| 1987–1988 | Chevrolet | R20 Suburban | Scottsdale | — |
| 1975–1978 | GMC | C35 | Sierra Classic | — |
| 1965–1967 | Chevrolet | Malibu | Base | — |
| 1965–1972 | Chevrolet | Biscayne | Base | — |
| 1968–1974 | Chevrolet | K10 Pickup | Base | — |
| 1975–1978 | GMC | C25 | High Sierra | — |
| 1979–1980 | GMC | C1500 | High Sierra | — |
| 1976 | Chevrolet | K10 | Custom Deluxe | — |
| 1975–1976 | Chevrolet | G30 | Chevy Van | — |
| 1976 | Chevrolet | K10 | Silverado | — |
| 1987 | GMC | R2500 Suburban | High Sierra | — |
| 1969 | Chevrolet | Camaro | RS | — |
| 1968–1974 | Chevrolet | K20 Pickup | Base | — |
| 1979–1986 | GMC | C3500 | High Sierra | — |
| 1981–1986 | Chevrolet | C30 | Custom | — |
| 1979 | GMC | P1500 | Value Van | — |
| 1968–1974 | GMC | C25/C2500 Suburban | Base | — |
| 1965–1976 | Chevrolet | Impala | Base | — |
| 1988–1990 | Chevrolet | G30 | Sportvan | — |
| 1975–1981 | Chevrolet | C30 | Cheyenne | — |
| 1969–1972 | Chevrolet | Chevelle | Greenbrier | — |
| 1984–1986 | Chevrolet | C20 Suburban | Scottsdale | — |
| 1985 | Chevrolet | K20 Suburban | Custom | — |
| 1979–1980 | Chevrolet | K10 | Custom Deluxe | — |
| 1968–1972 | Chevrolet | Chevelle | Malibu | — |
| 1987–1989 | GMC | V3500 | High Sierra | — |
| 1973–1974 | Chevrolet | G30 Van | Base | — |
| 1988 | Chevrolet | R30 | Cheyenne | — |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe | — |
| 1987–1988 | Chevrolet | V20 Suburban | Scottsdale | — |
| 1981 | Chevrolet | C20 | Deluxe | — |
| 1988–1990 | Chevrolet | C3500 | Cheyenne | — |
| 1975–1978 | GMC | C25 | Base | — |
| 1975 | GMC | Sprint | High Sierra | — |
| 1979–1980 | GMC | C1500 | Sierra Classic | — |
| 1987–1989 | GMC | V3500 | Sierra Classic | — |
| 1975–1976 | Chevrolet | G30 | Sportvan | — |
| 1979–1980 | GMC | K1500 | Sierra Grande | — |
| 1979–1980 | GMC | K1500 | Base | — |
| 1976–1978 | Chevrolet | K20 | Silverado | — |
| 1987–1989 | GMC | R3500 | Sierra Classic | — |
| 1981–1986 | Chevrolet | C20 Suburban | Custom | — |
| 1975 | Chevrolet | Monte Carlo | S | — |
| 1979–1982 | GMC | K3500 | Sierra Grande | — |
| 1980 | Chevrolet | K20 | Scottsdale | — |
| 1976 | Chevrolet | P20 | Step-Van | — |
| 1989–1990 | Chevrolet | R2500 Suburban | Silverado | — |
| 1989–1990 | Chevrolet | V3500 | Cheyenne | — |
| 1975–1976 | GMC | G25 | Rally STX | — |
| 1974 | GMC | G35/G3500 Van | Base | — |
| 1979–1980 | GMC | C1500 | Base | — |
| 1976 | GMC | Jimmy | High Sierra | — |
| 1968–1972 | Chevrolet | Chevelle | Nomad | — |
| 1980 | Chevrolet | K20 | Cheyenne | — |
| 1975–1978 | GMC | C25 Suburban | Base | — |
| 1990 | GMC | R2500 Suburban | SLE | — |
| 1965–1972 | Chevrolet | Chevelle | SS | — |
| 1978 | GMC | C15 | Street Coupe | — |
| 1976 | GMC | K15 | Base | — |
| 1987–1989 | GMC | R3500 | High Sierra | — |
| 1971–1972 | Chevrolet | Camaro | Base | — |
| 1975–1978 | GMC | C15 Suburban | High Sierra | — |
| 1976–1978 | Chevrolet | K20 | Custom Deluxe | — |
| 1975–1980 | Chevrolet | C10 | Custom Deluxe | — |
| 1976 | Chevrolet | Caprice | Classic Landau | — |
| 1969 | Chevrolet | Camaro | Base | — |
| 1967 | Chevrolet | Chevelle | Deluxe | — |
| 1987–1988 | Chevrolet | V20 Suburban | Silverado | — |
| 1968–1974 | GMC | K25/K2500 Suburban | Base | — |
| 1973–1974 | Chevrolet | Malibu | Estate | — |
| 1975–1980 | Chevrolet | C20 | Custom Deluxe | — |
| 1990 | GMC | V3500 | SLE | — |
| 1975 | Chevrolet | Malibu | Classic Estate | — |
| 1975 | GMC | Sprint | Classic | — |
| 1975–1976 | Chevrolet | G30 | Hi-Cube | — |
| 1988–1990 | GMC | G3500 | Magnavan | — |
| 1969–1972 | Chevrolet | Chevelle | Concours Estate | — |
| 1965–1967 | Chevrolet | Impala | SS | — |
| 1973–1974 | Chevrolet | G20 Van | Base | — |
| 1975 | Chevrolet | El Camino | Classic | — |
| 1976–1977 | GMC | K25 Suburban | Base | — |
| 1976–1977 | GMC | K25 Suburban | Sierra Grande | — |
| 1990 | GMC | R3500 | SLE | — |
| 1975 | Chevrolet | Laguna | S3 | — |
| 1981–1986 | Chevrolet | K30 | Custom | — |
| 1975–1980 | Chevrolet | C10 | Scottsdale | — |
| 1973–1974 | GMC | G35/G3500 Van | Rally | — |
| 1979–1986 | GMC | C2500 | Base | — |
| 1970–1971 | GMC | P25/P2500 Van | Base | — |
| 1987–1988 | Chevrolet | R20 | Scottsdale | — |
| 1973–1975 | Chevrolet | Malibu | Base | — |
| 1989–1990 | Chevrolet | R3500 | Silverado | — |
| 1989–1990 | Chevrolet | V3500 | Scottsdale | — |
| 1976 | GMC | G35 | Rally Camper Special | — |
| 1989–1990 | GMC | G3500 | Rally | — |
| 1979 | Chevrolet | P20 | Base | — |
| 1981 | Chevrolet | C20 Suburban | Deluxe | — |
| 1989–1990 | Chevrolet | R3500 | Scottsdale | — |
| 1975–1981 | Chevrolet | C20 | Cheyenne | — |
| 1988–1990 | GMC | K3500 | Sierra SLX | — |
| 1987–1989 | GMC | R2500 | High Sierra | — |
| 1973–1976 | Chevrolet | Caprice | Classic | — |
| 1973–1974 | Chevrolet | G20 Van | Sportvan | — |
| 1988–1990 | GMC | K3500 | Sierra SLE | — |
| 1970–1974 | Chevrolet | P30 Van | Base | — |
| 1987–1989 | GMC | R2500 | Sierra Classic | — |
| 1973–1974 | Chevrolet | Caprice | Estate | — |
| 1975–1986 | Chevrolet | C30 | Scottsdale | — |
| 1975–1980 | Chevrolet | C20 Suburban | Custom Deluxe | — |
| 1965–1975 | Chevrolet | Bel Air | Base | — |
| 1989–1990 | GMC | G3500 | Vandura Special | — |
| 1990 | Chevrolet | C1500 | 454 SS | — |
| 1968–1974 | GMC | C15/C1500 Pickup | Base | — |
| 1980–1981 | Chevrolet | K30 | Cheyenne | — |
| 1976 | Chevrolet | Impala | Custom Landau | — |
| 1979–1986 | GMC | C3500 | Sierra Classic | — |
| 1987–1988 | Chevrolet | V30 | Silverado | — |
| 1988–1990 | Chevrolet | G30 | Hi-Cube | — |
| 1981–1986 | Chevrolet | C20 | Custom | — |
| 1979–1986 | GMC | C3500 | Base | — |
| 1970–1972 | Chevrolet | Chevelle | Base | — |
| 1969–1972 | Chevrolet | Nova | Base | — |
| 1987–1988 | Chevrolet | V30 | Custom Deluxe | — |
| 1987–1989 | Chevrolet | P30 | Step-Van | — |
| 1979–1982 | GMC | C2500 | Sierra Grande | — |
| 1990 | Chevrolet | C1500 | Silverado | — |
| 1974 | Chevrolet | Laguna | Type S-3 | — |
| 1975–1989 | Chevrolet | P30 | Base | — |
| 1989–1990 | GMC | G3500 | Vandura | — |
| 1976 | Chevrolet | G20 | Sportvan | — |
| 1966–1972 | Chevrolet | Caprice | Base | — |
| 1977 | GMC | C15 | Indy Hauler | — |
| 1968–1974 | GMC | C25/C2500 Pickup | Base | — |
| 1979–1980 | GMC | C1500 Suburban | High Sierra | — |
| 1968–1974 | Chevrolet | K10 Suburban | Base | — |
| 1976 | GMC | Jimmy | Sierra Classic | — |
| 1975 | GMC | Sprint | SP | — |
| 1979–1980 | GMC | C1500 Suburban | Sierra Classic | — |
| 1975–1978 | GMC | C25 | Sierra Classic | — |
| 1973–1974 | GMC | Jimmy | Base | — |
| 1975–1978 | GMC | C25 Suburban | Sierra Classic | — |
| 1990 | Chevrolet | C1500 | Scottsdale | — |
| 1976 | GMC | K15 | Sierra Classic | — |
| 1977 | Chevrolet | K30 | Silverado | — |
| 1973–1974 | Chevrolet | Monte Carlo | Landau | — |
| 1976–1978 | GMC | K25 | Base | — |
| 1975–1978 | GMC | C15 Suburban | Sierra Classic | — |
| 1980 | Chevrolet | K30 | Custom Deluxe | — |
| 1979–1986 | GMC | C2500 | Sierra Classic | — |
| 1975–1976 | GMC | G25 | Vandura | — |
| 1968–1974 | Chevrolet | K30 Pickup | Base | — |
| 1988–1990 | Chevrolet | K3500 | Silverado | — |
| 1976 | Chevrolet | P20 | Base | — |
| 1987–1988 | Chevrolet | R30 | Scottsdale | — |
| 1969–1972 | Chevrolet | Brookwood | Base | — |
| 1980 | Chevrolet | K20 | Silverado | — |
| 1969–1972 | Chevrolet | Kingswood | Estate | — |
| 1988–1990 | Chevrolet | G30 | Beauville | — |
| 1988–1990 | Chevrolet | K3500 | Cheyenne | — |
| 1971–1975 | GMC | Sprint | Base | — |
| 1976 | Chevrolet | K10 | Cheyenne | — |
| 1976 | GMC | K15 | High Sierra | — |
| 1965–1974 | Chevrolet | Corvette | Base | — |
| 1980–1986 | Chevrolet | K30 | Silverado | — |
| 1987–1990 | GMC | R3500 | Base | — |
| 1988 | Chevrolet | V30 | Cheyenne | — |
| 1975–1978 | GMC | C35 | Base | — |
| 1976–1978 | Chevrolet | K20 | Scottsdale | — |
| 1979–1980 | Chevrolet | C20 Suburban | Silverado | — |
| 1968–1974 | Chevrolet | C10 Pickup | Base | — |
| 1976 | GMC | G35 | Vandura Special | — |
| 1988–1990 | GMC | C3500 | Sierra SLX | — |
| 1975–1978 | GMC | C15 | Sierra Grande | — |
| 1975–1980 | Chevrolet | C30 | Custom Deluxe | — |
| 1979–1980 | GMC | C1500 Suburban | Base | — |
| 1973 | Chevrolet | Laguna | Estate | — |
| 1976–1978 | GMC | K25 | High Sierra | — |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe | — |
| 1974–1975 | Chevrolet | Malibu | Classic | — |
| 1976–1978 | Chevrolet | K20 | Cheyenne | — |
| 1975–1976 | GMC | G25 | Rally | — |
| 1966–1975 | Chevrolet | El Camino | Base | — |
| 1977 | Chevrolet | K30 | Custom Deluxe | — |
| 1975–1980 | Chevrolet | C10 Suburban | Scottsdale | — |
| 1968 | Chevrolet | Chevy II | Nova | — |
| 1968–1974 | GMC | C35/C3500 Pickup | Base | — |
| 1968–1974 | Chevrolet | El Camino | Custom | — |
| 1989–1990 | GMC | G3500 | Rally STX | — |
| 1973–1974 | Chevrolet | G10 Van | Base | — |
| 1969–1970 | Chevrolet | Estate | Base | — |
| 1979–1980 | GMC | C1500 | Sierra Grande | — |
| 1969–1972 | Chevrolet | Kingswood | Base | — |
| 1979–1980 | Chevrolet | K10 | Cheyenne | — |
| 1987–1988 | Chevrolet | V30 | Scottsdale | — |
| 1975–1978 | GMC | C35 | Sierra Grande | — |
| 1975–1978 | GMC | C25 Suburban | High Sierra | — |
| 1980–1986 | Chevrolet | K30 | Scottsdale | — |
| 1988–1990 | Chevrolet | G30 | Chevy Van | — |
| 1975–1980 | Chevrolet | C10 | Silverado | — |
| 1975–1986 | Chevrolet | C20 | Scottsdale | — |
| 1975–1978 | GMC | C25 Suburban | Sierra Grande | — |
| 1968–1974 | Chevrolet | C10 Suburban | Base | — |
| 1989 | Chevrolet | R2500 | Silverado | — |
| Category | Engine Components |
|---|---|
| Sub-Category | Head Gaskets |
| CARB Approved | Yes |
| Prop 65 Warning | Y |
| Special Order | Yes |
| Weight | 1 lb |
| Dimensions (L×W×H) | 12 × 8 × 0.25 in |