COMP's Positive Stop PTFE valve seals offer more clearance for dual springs with better sealing than o-ring or umbrella seals. These 503 seals have a .630" outer diameter and fit applications with 11/32" valves and .530" OD valve guides.
CatalogUser 1This Part Fits:
| Year |
Make |
Model |
Submodel |
| 1980-1981 |
Buick |
Century |
Base |
| 1982-1989 |
Buick |
Century |
Custom |
| 1980-1981,1984 |
Buick |
Century |
Estate |
| 1985-1989 |
Buick |
Century |
Estate Wagon |
| 1980-1989 |
Buick |
Century |
Limited |
| 1984 |
Buick |
Century |
Olympia Limited |
| 1980-1981 |
Buick |
Century |
Sport |
| 1980-1987 |
Buick |
Electra |
Estate Wagon |
| 1980-1984 |
Buick |
Electra |
Limited |
| 1980-1984 |
Buick |
Electra |
Park Avenue |
| 1980-1983 |
Buick |
Estate Wagon |
Base |
| 1980-1981 |
Buick |
LeSabre |
Base |
| 1985 |
Buick |
LeSabre |
Collector's Edition |
| 1982-1985 |
Buick |
LeSabre |
Custom |
| 1985-1990 |
Buick |
LeSabre |
Estate Wagon |
| 1980-1985 |
Buick |
LeSabre |
Limited |
| 1982 |
Buick |
LeSabre |
Limited Edition F/E |
| 1981 |
Buick |
LeSabre |
Sport |
| 1980-1981,1986-1987 |
Buick |
Regal |
Base |
| 1980-1981,1986-1987 |
Buick |
Regal |
Limited |
| 1980-1985 |
Buick |
Riviera |
Base |
| 1982 |
Buick |
Riviera |
Limited Edition |
| 1983-1985 |
Buick |
Riviera |
Luxury |
| 1980 |
Buick |
Riviera |
S |
| 1981 |
Buick |
Riviera |
T-Type |
| 1983 |
Buick |
Riviera |
XX Anniversary Edition |
| 1980-1982 |
Buick |
Skylark |
Base |
| 1983-1989 |
Buick |
Skylark |
Custom |
| 1980-1989 |
Buick |
Skylark |
Limited |
| 1980-1982 |
Buick |
Skylark |
Sport |
| 1986-1987 |
Buick |
Somerset |
Custom |
| 1986-1987 |
Buick |
Somerset |
Limited |
| 1986 |
Buick |
Somerset |
T-Type |
| 1985 |
Buick |
Somerset Regal |
Base |
| 1985 |
Buick |
Somerset Regal |
Limited |
| 1987-1990 |
Cadillac |
Brougham |
Base |
| 1987-1990 |
Cadillac |
Brougham |
d'Elegance |
| 1986 |
Cadillac |
Fleetwood |
Brougham |
| 1986 |
Cadillac |
Fleetwood |
Brougham d'Elegance |
| 1985-1989 |
Chevrolet |
Astro |
Base |
| 1985-1989 |
Chevrolet |
Astro |
CL |
| 1985-1989 |
Chevrolet |
Astro |
CS |
| 1987-1989 |
Chevrolet |
Astro |
LT |
| 1994 |
Chevrolet |
Blazer |
Base |
| 1992-1993 |
Chevrolet |
Blazer |
Cheyenne |
| 1987 |
Chevrolet |
Blazer |
Custom Deluxe |
| 1988-1991 |
Chevrolet |
Blazer |
Scottsdale |
| 1987-1994 |
Chevrolet |
Blazer |
Silverado |
| 1994 |
Chevrolet |
Blazer |
Silverado Sport |
| 1980 |
Chevrolet |
C10 |
Big Ten |
| 1980-1981 |
Chevrolet |
C10 |
Cheyenne |
| 1981-1986 |
Chevrolet |
C10 |
Custom |
| 1980 |
Chevrolet |
C10 |
Custom Deluxe |
| 1981 |
Chevrolet |
C10 |
Deluxe |
| 1980-1986 |
Chevrolet |
C10 |
Scottsdale |
| 1980-1986 |
Chevrolet |
C10 |
Silverado |
| 1981-1986 |
Chevrolet |
C10 Suburban |
Custom |
| 1980 |
Chevrolet |
C10 Suburban |
Custom Deluxe |
| 1981 |
Chevrolet |
C10 Suburban |
Deluxe |
| 1980,1982,1984-1986 |
Chevrolet |
C10 Suburban |
Scottsdale |
| 1980,1982-1986 |
Chevrolet |
C10 Suburban |
Silverado |
| 1994-1995 |
Chevrolet |
C1500 |
Base |
| 1988-1995 |
Chevrolet |
C1500 |
Cheyenne |
| 1988-1992 |
Chevrolet |
C1500 |
Scottsdale |
| 1988-1995 |
Chevrolet |
C1500 |
Silverado |
| 1990-1995 |
Chevrolet |
C1500 |
WT |
| 1992-1995 |
Chevrolet |
C1500 Suburban |
Base |
| 1995 |
Chevrolet |
C1500 Suburban |
LS |
| 1995 |
Chevrolet |
C1500 Suburban |
LT |
| 1992-1994 |
Chevrolet |
C1500 Suburban |
Silverado |
| 1980-1981 |
Chevrolet |
C20 |
Cheyenne |
| 1981-1986 |
Chevrolet |
C20 |
Custom |
| 1980 |
Chevrolet |
C20 |
Custom Deluxe |
| 1981 |
Chevrolet |
C20 |
Deluxe |
| 1980-1986 |
Chevrolet |
C20 |
Scottsdale |
| 1980-1986 |
Chevrolet |
C20 |
Silverado |
| 1981-1986 |
Chevrolet |
C20 Suburban |
Custom |
| 1980 |
Chevrolet |
C20 Suburban |
Custom Deluxe |
| 1981 |
Chevrolet |
C20 Suburban |
Deluxe |
| 1980,1982,1984-1986 |
Chevrolet |
C20 Suburban |
Scottsdale |
| 1980,1982-1986 |
Chevrolet |
C20 Suburban |
Silverado |
| 1994-1995 |
Chevrolet |
C2500 |
Base |
| 1988-1995 |
Chevrolet |
C2500 |
Cheyenne |
| 1988-1992 |
Chevrolet |
C2500 |
Scottsdale |
| 1988-1995 |
Chevrolet |
C2500 |
Silverado |
| 1994-1995 |
Chevrolet |
C2500 |
WT |
| 1992-1995 |
Chevrolet |
C2500 Suburban |
Base |
| 1995 |
Chevrolet |
C2500 Suburban |
LS |
| 1995 |
Chevrolet |
C2500 Suburban |
LT |
| 1992-1994 |
Chevrolet |
C2500 Suburban |
Silverado |
| 1980-1981 |
Chevrolet |
C30 |
Cheyenne |
| 1981-1986 |
Chevrolet |
C30 |
Custom |
| 1980 |
Chevrolet |
C30 |
Custom Deluxe |
| 1981 |
Chevrolet |
C30 |
Deluxe |
| 1980-1986 |
Chevrolet |
C30 |
Scottsdale |
| 1980-1986 |
Chevrolet |
C30 |
Silverado |
| 1994-1995 |
Chevrolet |
C3500 |
Base |
| 1988-1995 |
Chevrolet |
C3500 |
Cheyenne |
| 1988-1992 |
Chevrolet |
C3500 |
Scottsdale |
| 1988-1995 |
Chevrolet |
C3500 |
Silverado |
| 1980,1988 |
Chevrolet |
Camaro |
Base |
| 1980-1986 |
Chevrolet |
Camaro |
Berlinetta |
| 1985-1990 |
Chevrolet |
Camaro |
Iroc-Z |
| 1987 |
Chevrolet |
Camaro |
LT |
| 1980 |
Chevrolet |
Camaro |
Rally Sport |
| 1989-1992 |
Chevrolet |
Camaro |
RS |
| 1992 |
Chevrolet |
Camaro |
RS Heritage Edition |
| 1981-1987 |
Chevrolet |
Camaro |
Sport |
| 1980-1987,1991-1992 |
Chevrolet |
Camaro |
Z28 |
| 1992 |
Chevrolet |
Camaro |
Z28 Heritage Edition |
| 1982 |
Chevrolet |
Camaro |
Z28 Indianapolis 500 Pace Car |
| 1986-1992 |
Chevrolet |
Caprice |
Base |
| 1980-1993 |
Chevrolet |
Caprice |
Classic |
| 1986-1990 |
Chevrolet |
Caprice |
Classic Brougham |
| 1981-1982 |
Chevrolet |
Caprice |
Classic Estate |
| 1980-1981 |
Chevrolet |
Caprice |
Classic Landau |
| 1993 |
Chevrolet |
Caprice |
Classic LS |
| 1987-1990 |
Chevrolet |
Caprice |
Classic LS Brougham |
| 1991-1993 |
Chevrolet |
Caprice |
Classic LTZ |
| 1980 |
Chevrolet |
Caprice |
Classic Sport |
| 1982-1989 |
Chevrolet |
Celebrity |
Base |
| 1982-1983,1989 |
Chevrolet |
Celebrity |
CL |
| 1985 |
Chevrolet |
Celebrity |
Classic |
| 1982 |
Chevrolet |
Celebrity |
CS |
| 1985-1987 |
Chevrolet |
Celebrity |
Estate |
| 1984-1989 |
Chevrolet |
Celebrity |
Eurosport |
| 1980-1983 |
Chevrolet |
Citation |
Base |
| 1980 |
Chevrolet |
Citation |
Club |
| 1980 |
Chevrolet |
Citation |
Custom |
| 1980-1983 |
Chevrolet |
Citation |
X-11 |
| 1984-1985 |
Chevrolet |
Citation II |
Base |
| 1984-1985 |
Chevrolet |
Citation II |
X-11 |
| 1988 |
Chevrolet |
Corvette |
35th Anniversary Edition |
| 1980-1982,1984-1991 |
Chevrolet |
Corvette |
Base |
| 1982 |
Chevrolet |
Corvette |
Collector's Edition |
| 1986 |
Chevrolet |
Corvette |
Indianapolis 500 Pace Car |
| 1990-1991 |
Chevrolet |
Corvette |
ZR-1 |
| 1980-1987 |
Chevrolet |
El Camino |
Base |
| 1981-1986 |
Chevrolet |
El Camino |
Conquista |
| 1980-1981 |
Chevrolet |
El Camino |
Royal Knight |
| 1980-1987 |
Chevrolet |
El Camino |
SS |
| 1983 |
Chevrolet |
G10 |
Base |
| 1980-1995 |
Chevrolet |
G10 |
Beauville |
| 1981-1984,1986-1987 |
Chevrolet |
G10 |
Bonaventure |
| 1980-1995 |
Chevrolet |
G10 |
Chevy Van |
| 1980-1995 |
Chevrolet |
G10 |
Sportvan |
| 1980-1995 |
Chevrolet |
G20 |
Beauville |
| 1983-1984 |
Chevrolet |
G20 |
Bonaventure |
| 1980-1995 |
Chevrolet |
G20 |
Chevy Van |
| 1980-1981 |
Chevrolet |
G20 |
Nomad |
| 1980-1995 |
Chevrolet |
G20 |
Sportvan |
| 1980-1996 |
Chevrolet |
G30 |
Beauville |
| 1983-1984 |
Chevrolet |
G30 |
Bonaventure |
| 1980-1996 |
Chevrolet |
G30 |
Chevy Van |
| 1980-1996 |
Chevrolet |
G30 |
Hi-Cube |
| 1980-1996 |
Chevrolet |
G30 |
Sportvan |
| 1980-1985 |
Chevrolet |
Impala |
Base |
| 1981-1982 |
Chevrolet |
Impala |
Estate |
| 1980 |
Chevrolet |
Impala |
Sport |
| 1980-1981 |
Chevrolet |
K10 |
Cheyenne |
| 1981-1986 |
Chevrolet |
K10 |
Custom |
| 1980 |
Chevrolet |
K10 |
Custom Deluxe |
| 1981 |
Chevrolet |
K10 |
Deluxe |
| 1980-1986 |
Chevrolet |
K10 |
Scottsdale |
| 1980-1986 |
Chevrolet |
K10 |
Silverado |
| 1981-1986 |
Chevrolet |
K10 Suburban |
Custom |
| 1980 |
Chevrolet |
K10 Suburban |
Custom Deluxe |
| 1981 |
Chevrolet |
K10 Suburban |
Deluxe |
| 1980,1982,1984-1986 |
Chevrolet |
K10 Suburban |
Scottsdale |
| 1980,1982-1983,1985-1986 |
Chevrolet |
K10 Suburban |
Silverado |
| 1994-1995 |
Chevrolet |
K1500 |
Base |
| 1988-1995 |
Chevrolet |
K1500 |
Cheyenne |
| 1988-1992 |
Chevrolet |
K1500 |
Scottsdale |
| 1988-1995 |
Chevrolet |
K1500 |
Silverado |
| 1991 |
Chevrolet |
K1500 |
Sport |
| 1990-1995 |
Chevrolet |
K1500 |
WT |
| 1992-1995 |
Chevrolet |
K1500 Suburban |
Base |
| 1995 |
Chevrolet |
K1500 Suburban |
LS |
| 1995 |
Chevrolet |
K1500 Suburban |
LT |
| 1992-1994 |
Chevrolet |
K1500 Suburban |
Silverado |
| 1980-1981 |
Chevrolet |
K20 |
Cheyenne |
| 1981-1986 |
Chevrolet |
K20 |
Custom |
| 1980 |
Chevrolet |
K20 |
Custom Deluxe |
| 1981 |
Chevrolet |
K20 |
Deluxe |
| 1980-1986 |
Chevrolet |
K20 |
Scottsdale |
| 1980-1983,1985-1986 |
Chevrolet |
K20 |
Silverado |
| 1981-1986 |
Chevrolet |
K20 Suburban |
Custom |
| 1980 |
Chevrolet |
K20 Suburban |
Custom Deluxe |
| 1981 |
Chevrolet |
K20 Suburban |
Deluxe |
| 1980,1982,1984-1986 |
Chevrolet |
K20 Suburban |
Scottsdale |
| 1980,1982-1983,1985-1986 |
Chevrolet |
K20 Suburban |
Silverado |
| 1994-1995 |
Chevrolet |
K2500 |
Base |
| 1988-1995 |
Chevrolet |
K2500 |
Cheyenne |
| 1988-1992 |
Chevrolet |
K2500 |
Scottsdale |
| 1988-1995 |
Chevrolet |
K2500 |
Silverado |
| 1994-1995 |
Chevrolet |
K2500 |
WT |
| 1992-1995 |
Chevrolet |
K2500 Suburban |
Base |
| 1995 |
Chevrolet |
K2500 Suburban |
LS |
| 1995 |
Chevrolet |
K2500 Suburban |
LT |
| 1992-1994 |
Chevrolet |
K2500 Suburban |
Silverado |
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