COMP Cams Valve Seal Kits (503-12) for a 86-87 Regal, 99-03 Silverado 1500, 63-66 Suburban Base, 67-79 Camaro, 87-87 R10, 87-87 V10, 88-03 S10, 63-73 Bel Air Base, 63-72 Biscayne Base, 64-73 Chevelle, 63-79 Impala, 68-80 C10 Suburban, 88-98 C1500, 68-74 C20 Suburban Base, 88-95 C2500,.
0 Reviews
| Years | Make | Model | Trim | ||
|---|---|---|---|---|---|
| 1986-1986 | Buick | Regal | T-Type | ||
| 1986-1987 | Buick | Regal | Limited | ||
| 1986-1987 | Buick | Regal | Grand National | ||
| 1986-1987 | Buick | Regal | Base | ||
| 1987-1987 | Buick | Regal | GNX | ||
| 1987-2000 | Chevrolet | Astro | LT | ||
| 1987-1995 | Chevrolet | Astro | CS | ||
| 1987-1995 | Chevrolet | Astro | CL | ||
| 1987-2000 | Chevrolet | Astro | Base | ||
| 1996-2000 | Chevrolet | Astro | LS | ||
| 1963-1973 | Chevrolet | Bel Air | Base | ||
| 1963-1972 | Chevrolet | Biscayne | Base | ||
| 1969-1974 | Chevrolet | Blazer | Base | ||
| 1995-2001 | Chevrolet | Blazer | LT | ||
| 1995-1999 | Chevrolet | Blazer | Base | ||
| 1996-2003 | Chevrolet | Blazer | LS | ||
| 1999-2001 | Chevrolet | Blazer | Trailblazer | ||
| 2001-2003 | Chevrolet | Blazer | Xtreme | ||
| 2003-2003 | Chevrolet | Blazer | ZR2 | ||
| 1969-1969 | Chevrolet | Brookwood | Base | ||
| 1968-1974 | Chevrolet | C10 Suburban | Base | ||
| 1975-1980 | Chevrolet | C10 Suburban | Silverado | ||
| 1975-1980 | Chevrolet | C10 Suburban | Scottsdale | ||
| 1975-1980 | Chevrolet | C10 Suburban | Custom Deluxe | ||
| 1988-1998 | Chevrolet | C1500 | Silverado | ||
| 1988-1992 | Chevrolet | C1500 | Scottsdale | ||
| 1988-1998 | Chevrolet | C1500 | Cheyenne | ||
| 1990-1998 | Chevrolet | C1500 | WT | ||
| 1994-1997 | Chevrolet | C1500 | Base | ||
| 1968-1974 | Chevrolet | C20 Suburban | Base | ||
| 1988-1995 | Chevrolet | C2500 | Silverado | ||
| 1988-1992 | Chevrolet | C2500 | Scottsdale | ||
| 1988-1995 | Chevrolet | C2500 | Cheyenne | ||
| 1994-1995 | Chevrolet | C2500 | WT | ||
| 1994-1995 | Chevrolet | C2500 | Base | ||
| 1967-1973 | Chevrolet | Camaro | RS | ||
| 1967-1979 | Chevrolet | Camaro | Base | ||
| 1975-1975 | Chevrolet | Camaro | RS | ||
| 1975-1975 | Chevrolet | Camaro | LT | ||
| 1976-1979 | Chevrolet | Camaro | Rally Sport | ||
| 1977-1978 | Chevrolet | Camaro | LT | ||
| 1977-1978 | Chevrolet | Camaro | LT Rally Sport | ||
| 1979-1979 | Chevrolet | Camaro | Berlinetta | ||
| 1967-1969 | Chevrolet | Caprice | Base | ||
| 1977-1979 | Chevrolet | Caprice | Classic Landau | ||
| 1977-1979 | Chevrolet | Caprice | Classic | ||
| 1979-1979 | Chevrolet | Caprice | Classic Sport | ||
| 1987-1988 | Chevrolet | Caprice | Classic LS Brougham | ||
| 1987-1988 | Chevrolet | Caprice | Classic Brougham | ||
| 1987-1990 | Chevrolet | Caprice | Classic | ||
| 1987-1990 | Chevrolet | Caprice | Base | ||
| 1993-1993 | Chevrolet | Caprice | Classic | ||
| 1964-1972 | Chevrolet | Chevelle | SS | ||
| 1964-1967 | Chevrolet | Chevelle | Base | ||
| 1965-1967 | Chevrolet | Chevelle | Deluxe | ||
| 1967-1972 | Chevrolet | Chevelle | Concours | ||
| 1967-1969 | Chevrolet | Chevelle | 300 Deluxe | ||
| 1967-1968 | Chevrolet | Chevelle | 300 | ||
| 1968-1972 | Chevrolet | Chevelle | Nomad | ||
| 1968-1972 | Chevrolet | Chevelle | Malibu | ||
| 1969-1972 | Chevrolet | Chevelle | Greenbrier | ||
| 1969-1972 | Chevrolet | Chevelle | Concours Estate | ||
| 1970-1972 | Chevrolet | Chevelle | Base | ||
| 1973-1973 | Chevrolet | Chevelle | Deluxe | ||
| 1963-1968 | Chevrolet | Chevy II | Nova | ||
| 1963-1967 | Chevrolet | Chevy II | Base | ||
| 1964-1967 | Chevrolet | Chevy II | Nova SS | ||
| 1964-1977 | Chevrolet | El Camino | Base | ||
| 1968-1974 | Chevrolet | El Camino | Custom | ||
| 1975-1977 | Chevrolet | El Camino | Classic | ||
| 1977-1977 | Chevrolet | El Camino | Conquista | ||
| 1987-1987 | Chevrolet | El Camino | SS | ||
| 1987-1987 | Chevrolet | El Camino | Base | ||
| 1996-2003 | Chevrolet | Express 1500 | LS | ||
| 1996-2003 | Chevrolet | Express 1500 | Base | ||
| 2001-2002 | Chevrolet | Express 1500 | LT | ||
| 1996-2003 | Chevrolet | Express 2500 | LS | ||
| 1996-2003 | Chevrolet | Express 2500 | Base | ||
| 1975-1984 | Chevrolet | G10 | Sportvan | ||
| 1975-1984 | Chevrolet | G10 | Chevy Van | ||
| 1975-1984 | Chevrolet | G10 | Beauville | ||
| 1981-1984 | Chevrolet | G10 | Bonaventure | ||
| 1983-1983 | Chevrolet | G10 | Base | ||
| 1987-1995 | Chevrolet | G10 | Sportvan | ||
| 1987-1995 | Chevrolet | G10 | Chevy Van | ||
| 1987-1987 | Chevrolet | G10 | Bonaventure | ||
| 1987-1995 | Chevrolet | G10 | Beauville | ||
| 1964-1967 | Chevrolet | G10 Van | Base | ||
| 1968-1974 | Chevrolet | G10 Van | Sportvan | ||
| 1969-1974 | Chevrolet | G10 Van | Base | ||
| 1975-1975 | Chevrolet | G20 | Chevy Van | ||
| 1975-1975 | Chevrolet | G20 | Beauville | ||
| 1977-1984 | Chevrolet | G20 | Chevy Van | ||
| 1977-1984 | Chevrolet | G20 | Beauville | ||
| 1978-1984 | Chevrolet | G20 | Sportvan | ||
| 1978-1981 | Chevrolet | G20 | Nomad | ||
| 1983-1984 | Chevrolet | G20 | Bonaventure | ||
| 1987-1995 | Chevrolet | G20 | Sportvan | ||
| 1987-1995 | Chevrolet | G20 | Chevy Van | ||
| 1987-1995 | Chevrolet | G20 | Beauville | ||
| 1967-1974 | Chevrolet | G20 Van | Base | ||
| 1968-1974 | Chevrolet | G20 Van | Sportvan | ||
| 1976-1976 | Chevrolet | G30 | Hi-Cube | ||
| 1976-1976 | Chevrolet | G30 | Chevy Van | ||
| 1976-1976 | Chevrolet | G30 | Beauville | ||
| 1978-1979 | Chevrolet | G30 | Hi-Cube | ||
| 1978-1979 | Chevrolet | G30 | Chevy Van | ||
| 1978-1979 | Chevrolet | G30 | Beauville | ||
| 1981-1984 | Chevrolet | G30 | Hi-Cube | ||
| 1981-1984 | Chevrolet | G30 | Chevy Van | ||
| 1981-1984 | Chevrolet | G30 | Beauville | ||
| 1983-1984 | Chevrolet | G30 | Bonaventure | ||
| 1987-1995 | Chevrolet | G30 | Hi-Cube | ||
| 1987-1995 | Chevrolet | G30 | Chevy Van | ||
| 1987-1995 | Chevrolet | G30 | Beauville | ||
| 1970-1974 | Chevrolet | G30 Van | Sportvan | ||
| 1970-1974 | Chevrolet | G30 Van | Base | ||
| 1963-1973 | Chevrolet | Impala | Base | ||
| 1964-1967 | Chevrolet | Impala | SS | ||
| 1977-1979 | Chevrolet | Impala | Landau | ||
| 1977-1977 | Chevrolet | Impala | Custom | ||
| 1977-1979 | Chevrolet | Impala | Base | ||
| 1979-1979 | Chevrolet | Impala | Sport | ||
| 1968-1974 | Chevrolet | K10 Suburban | Base | ||
| 1975-1977 | Chevrolet | K10 Suburban | Silverado | ||
| 1975-1980 | Chevrolet | K10 Suburban | Scottsdale | ||
| 1975-1980 | Chevrolet | K10 Suburban | Custom Deluxe | ||
| 1979-1980 | Chevrolet | K10 Suburban | Silverado | ||
| 1988-1998 | Chevrolet | K1500 | Silverado | ||
| 1988-1992 | Chevrolet | K1500 | Scottsdale | ||
| 1988-1998 | Chevrolet | K1500 | Cheyenne | ||
| 1990-1998 | Chevrolet | K1500 | WT | ||
| 1991-1991 | Chevrolet | K1500 | Sport | ||
| 1994-1997 | Chevrolet | K1500 | Base | ||
| 1968-1974 | Chevrolet | K20 Suburban | Base | ||
| 1988-1995 | Chevrolet | K2500 | Silverado | ||
| 1988-1992 | Chevrolet | K2500 | Scottsdale | ||
| 1988-1995 | Chevrolet | K2500 | Cheyenne | ||
| 1994-1995 | Chevrolet | K2500 | WT | ||
| 1994-1995 | Chevrolet | K2500 | Base | ||
| 1975-1975 | Chevrolet | K5 Blazer | Custom Deluxe | ||
| 1975-1980 | Chevrolet | K5 Blazer | Cheyenne | ||
| 1976-1976 | Chevrolet | K5 Blazer | Base | ||
| 1977-1980 | Chevrolet | K5 Blazer | Custom Deluxe | ||
| 1978-1978 | Chevrolet | K5 Blazer | Silverado | ||
| 1980-1982 | Chevrolet | K5 Blazer | Silverado | ||
| 1981-1981 | Chevrolet | K5 Blazer | Deluxe | ||
| 1981-1982 | Chevrolet | K5 Blazer | Custom | ||
| 1964-1967 | Chevrolet | Malibu | Base | ||
| 1973-1974 | Chevrolet | Malibu | Estate | ||
| 1973-1977 | Chevrolet | Malibu | Base | ||
| 1974-1977 | Chevrolet | Malibu | Classic | ||
| 1976-1976 | Chevrolet | Malibu | Landau | ||
| 1976-1977 | Chevrolet | Malibu | Classic Landau | ||
| 1977-1977 | Chevrolet | Malibu | Sport | ||
| 1977-1977 | Chevrolet | Malibu | Classic Sport | ||
| 1987-1988 | Chevrolet | Monte Carlo | Base | ||
| 1987-1988 | Chevrolet | Monte Carlo | LS | ||
| 1969-1979 | Chevrolet | Nova | Base | ||
| 1973-1975 | Chevrolet | Nova | Custom | ||
| 1975-1975 | Chevrolet | Nova | LN | ||
| 1975-1975 | Chevrolet | Nova | Police | ||
| 1976-1977 | Chevrolet | Nova | Concours | ||
| 1977-1979 | Chevrolet | Nova | Rally | ||
| 1978-1978 | Chevrolet | Nova | Police | ||
| 1978-1979 | Chevrolet | Nova | Custom | ||
| 1987-1987 | Chevrolet | R10 | Silverado | ||
| 1987-1987 | Chevrolet | R10 | Scottsdale | ||
| 1987-1987 | Chevrolet | R10 | Custom Deluxe | ||
| 1987-1987 | Chevrolet | R20 | Silverado | ||
| 1987-1987 | Chevrolet | R20 | Scottsdale | ||
| 1987-1987 | Chevrolet | R20 | Custom Deluxe | ||
| 1988-1992 | Chevrolet | S10 | Tahoe | ||
| 1988-1989 | Chevrolet | S10 | Sport | ||
| 1988-1990 | Chevrolet | S10 | Durango | ||
| 1988-2003 | Chevrolet | S10 | Base | ||
| 1991-1991 | Chevrolet | S10 | Baja | ||
| 1992-1993 | Chevrolet | S10 | EL | ||
| 1994-2003 | Chevrolet | S10 | ZR2 | ||
| 1994-1998 | Chevrolet | S10 | SS | ||
| 1994-2003 | Chevrolet | S10 | LS | ||
| 1999-2003 | Chevrolet | S10 | Xtreme | ||
| 2002-2003 | Chevrolet | S10 | ZR5 | ||
| 1988-1990 | Chevrolet | S10 Blazer | Sport | ||
| 1988-1988 | Chevrolet | S10 Blazer | Tahoe | ||
| 1988-1989 | Chevrolet | S10 Blazer | High Country | ||
| 1988-1994 | Chevrolet | S10 Blazer | Base | ||
| 1990-1994 | Chevrolet | S10 Blazer | Tahoe | ||
| 1991-1994 | Chevrolet | S10 Blazer | Tahoe LT | ||
| 1992-1992 | Chevrolet | S10 Blazer | Sport | ||
| 1994-1994 | Chevrolet | S10 Blazer | LT | ||
| 1999-2003 | Chevrolet | Silverado 1500 | LS | ||
| 1999-2003 | Chevrolet | Silverado 1500 | LT | ||
| 1999-2003 | Chevrolet | Silverado 1500 | Base | ||
| 2002-2003 | Chevrolet | Silverado 1500 | WT | ||
| 1963-1966 | Chevrolet | Suburban | Base | ||
| 1987-1987 | Chevrolet | V10 | Scottsdale | ||
| 1987-1987 | Chevrolet | V10 | Silverado | ||
| 1987-1987 | Chevrolet | V10 | Custom Deluxe | ||
| 1959-1959 | Fiat | 1100 | Base | ||
| 1975-1977 | Ford | F-100 | Ranger XLT | ||
| 1975-1977 | Ford | F-100 | Ranger | ||
| 1975-1977 | Ford | F-100 | Northland | ||
| 1975-1977 | Ford | F-100 | Custom | ||
| 1976-1977 | Ford | F-100 | Base | ||
| 1977-1977 | Ford | F-100 | XLT | ||
| 1979-1979 | Ford | F-100 | Ranger XLT | ||
| 1979-1979 | Ford | F-100 | Ranger Lariat | ||
| 1979-1979 | Ford | F-100 | Ranger | ||
| 1979-1979 | Ford | F-100 | Custom | ||
| 1975-1979 | Ford | F-150 | Ranger XLT | ||
| 1975-1979 | Ford | F-150 | Ranger | ||
| 1975-1979 | Ford | F-150 | Custom | ||
| 1975-1978 | Ford | F-150 | Northland | ||
| 1976-1978 | Ford | F-150 | Base | ||
| 1977-1977 | Ford | F-150 | XLT | ||
| 1978-1979 | Ford | F-150 | Ranger Lariat | ||
| 1975-1979 | Ford | F-250 | Ranger XLT | ||
| 1975-1979 | Ford | F-250 | Ranger | ||
| 1975-1979 | Ford | F-250 | Custom | ||
| 1975-1978 | Ford | F-250 | Northland | ||
| 1976-1978 | Ford | F-250 | Base | ||
| 1977-1977 | Ford | F-250 | XLT | ||
| 1978-1979 | Ford | F-250 | Ranger Lariat | ||
| 1983-1984 | Ford | F-250 | XLT | ||
| 1983-1983 | Ford | F-250 | XLS | ||
| 1983-1994 | Ford | F-250 | XL | ||
| 1983-1986 | Ford | F-250 | Base | ||
| 1985-1992 | Ford | F-250 | XLT Lariat | ||
| 1987-1992 | Ford | F-250 | Custom | ||
| 1993-1994 | Ford | F-250 | XLT | ||
| 1975-1979 | Ford | F-350 | Ranger | ||
| 1975-1978 | Ford | F-350 | Northland | ||
| 1975-1979 | Ford | F-350 | Custom | ||
| 1975-1979 | Ford | F-350 | Ranger XLT | ||
| 1976-1978 | Ford | F-350 | Base | ||
| 1977-1977 | Ford | F-350 | XLT | ||
| 1978-1979 | Ford | F-350 | Ranger Lariat | ||
| 1983-1986 | Ford | F-350 | Base | ||
| 1983-1994 | Ford | F-350 | XL | ||
| 1983-1983 | Ford | F-350 | XLS | ||
| 1983-1984 | Ford | F-350 | XLT | ||
| 1985-1992 | Ford | F-350 | XLT Lariat | ||
| 1987-1992 | Ford | F-350 | Custom | ||
| 1993-1994 | Ford | F-350 | XLT | ||
| 1975-1978 | GMC | C15 | Base | ||
| 1975-1978 | GMC | C15 | High Sierra | ||
| 1977-1978 | GMC | C15 | Heavy Half |
WARNING: Cancer & Reproductive Harm www.p65warnings.ca.gov IN STOCK Cometic Gasket C4313-030Cometic Gasket Head Gaskets Cometic Honda K20/K24 89mm Head Gasket .030 inch MLS Head Gasket $102.89
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 IN STOCK Cometic Gasket C14080-030Cometic Gasket Head Gaskets Cometic Gasket Honda Civic/CRX - D15/D16 75mm MLS Head Gasket $102.89
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 IN STOCK King Engine Bearings CR4120XPC.026King Engine Bearings Performance Rod Bearings King Mitsubishi 4G63/4G64 (Size .026) Coated Connecting Rod Bearing - Set of 4 $63.20
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 IN STOCK - LOW Cometic Gasket C5790-040Cometic Gasket Head Gaskets Cometic GM LS1 (w/M.I.D. Sleeves) 4.165 inch Bore .040 inch MLS Headgasket $106.95
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 IN STOCK Brian Crower BC2945Brian Crower Valve Keepers/Locks Brian Crower Nissan SR20DE/T Billet Keepers $107.58
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 IN STOCK - LOW aFe 46-80001aFe Oil/EGR Coolers aFe Bladerunner Oil Cooler Ford Diesel Trucks 03-07 V8 6.0L (td) $314.82 SALE
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 $28.92
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For more information on COMP Cams part number 503-12, you can visit the official COMP Cams website.
