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COMP Cams 503-16 - Comp Cams Valve Stem Seals



COMP Cams 503-16 - Comp Cams Valve Stem Seals

JEGS Part Number: 249-503-16

Positive Stop PTFE Seals
  • Guide Size: .530''
  • Valve Size: 11/32''
  • 16/pkg
  • $25.27
    Ships

    COMP Cams 503-16 - Comp Cams Valve Stem Seals Details

    Positive Stop PTFE Seals

  • 1 Year Limited Warranty

  • Specifications:

    Diameter (in.)
    0.34375
    Machine Work Required
    Yes
    Quantity
    Sold as a set of 16
    Valve Guide Diameter (in.)
    0.53
    Valve Stem Diameter (in.)
    0.344
    Valve Stem Seal Material
    PTFE
    Valve Stem Seal Type
    Positive stop
    Manufacturer's Part Number:
    503-16

    Comp Cams offers a complete line of valve stem seals, from the stock GM O-ring to the positive stop PTFE seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. O-ring seals use the standard retainer and oil splash shield. Umbrella seals are normally used when a larger-than-stock diameter spring is used; in the case of a double spring, positive stop PTFE seals are used. There is also a smaller diameter Viton seal available for triple spring applications. O-rings and umbrella seals require no machining, but PTFE seals require the heads to be disassembled so the top guides can be machined with a special .530" diameter cutter. Whenever you're planning an overhaul or cam change, don't forget the valve seals!

    Features:
  • Excellent Sealing Properties
  • O-Ring & Umbrella Seals Require No Machining

  • Does this fit your vehicle?

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    1968 GMC C15/C1500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.4
    • SubModel: BASE
    • EngineType: V8

    1987 GMC V2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: HIGH SIERRA
    • EngineType: V8

    1988-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CHEYENNE
    • EngineType: V8

    1972 CHEVROLET EL CAMINO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1975-1978 FORD E-150 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: BASE

    1971 OLDSMOBILE CUTLASS SUPREME

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1980-1986 GMC C1500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: HIGH SIERRA
    • EngineType: V8

    1982 GMC JIMMY

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • EngineType: V8

    1985-1991 FORD F-150

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: SUPER CAB

    1963-1966 PONTIAC STAR CHIEF

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1970-1972 CHEVROLET TOWNSMAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1978-1979 OLDSMOBILE DELTA 88

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1969-1974 FORD E-200 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: CLUB PASSENGER WAGON

    1987 GMC R1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • EngineType: V8

    1981 GMC G35/G3500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: VANDURA SPECIAL

    1982-1986 CHEVROLET K10 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CUSTOM
    • EngineType: V8

    1986-1987 OLDSMOBILE CUTLASS SALON

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1981-1982 FORD LTD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: S
    • EngineType: V8

    1968 GMC K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.3
    • SubModel: BASE
    • EngineType: V8

    1980 OLDSMOBILE CUTLASS CALAIS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1979 FORD E-250 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: SUPER CARGO
    • EngineType: V8

    1986-1990 FORD F-350

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: XL
    • EngineType: V8

    1974 CHEVROLET G20 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1967 OLDSMOBILE VISTA CRUISER

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.4
    • SubModel: BASE
    • EngineType: V8

    1993 CHEVROLET CAPRICE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: CLASSIC LS

    1975 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: 442

    1968-1971 FORD COUNTRY SQUIRE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1973 MERCURY MONTEGO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: MX BROUGHAM
    • EngineType: V8

    1972-1973 PONTIAC GTO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • EngineType: V8

    1981 BUICK LESABRE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1987 FORD E-150 ECONOLINE CLUB WAGON

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: XLT

    1988-1992 CHEVROLET C1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1982-1987 CHEVROLET CAMARO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: SPORT

    1960 PONTIAC VENTURA

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1972-1973 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • EngineType: V8

    1994-1995 FORD E-350 ECONOLINE CLUB WAGON

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: XL HD
    • EngineType: V8

    1970 PONTIAC GTO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: THE JUDGE

    1980-1985 OLDSMOBILE TORONADO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BROUGHAM
    • EngineType: V8

    1982-1991 GMC JIMMY

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1978-1980 PONTIAC BONNEVILLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.9
    • SubModel: BROUGHAM
    • EngineType: V8

    1977-1978 CHEVROLET CAMARO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: LT RALLY SPORT

    1959-1960 CHEVROLET EL CAMINO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.6
    • SubModel: BASE
    • EngineType: V8

    1974 CHEVROLET CORVETTE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8

    1980-1982 GMC C3500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • EngineType: V8

    1972-1973 OLDSMOBILE DELTA 88

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1981-1982 FORD E-250 ECONOLINE CLUB WAGON

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1993 FORD MUSTANG

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: SVT COBRA R

    1972 CHEVROLET CHEVELLE

    • CC: 5736
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: NOMAD
    • CUI: 350
    • EngineType: V8

    1968 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.3
    • SubModel: BASE
    • EngineType: V8

    1975 CHEVROLET MONTE CARLO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: S
    • EngineType: V8

    1979 CADILLAC FLEETWOOD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: BASE

    1981 PONTIAC FIREBIRD

    • Liter: 4.3
    • EngineType: V8
    • SubModel: BASE

    1978-1979 PONTIAC GRAND PRIX

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1978-1979 PONTIAC SUNBIRD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1977-1978 GMC K25 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1977-1978 GMC C25 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1970-1974 PONTIAC FIREBIRD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1968-1969 OLDSMOBILE VISTA CRUISER

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1972-1973 OLDSMOBILE CUTLASS SUPREME

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1969-1974 CHEVROLET K30 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1969-1970 MERCURY COUGAR

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • EngineType: V8

    1975 MERCURY MONTEGO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: VILLAGER

    1974 CHEVROLET BLAZER

    • CC: 5737
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • EngineType: V8

    1975-1976 PONTIAC VENTURA

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BASE
    • EngineType: V8

    1994 GMC YUKON

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SPORT
    • EngineType: V8

    1980-1986 GMC C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • EngineType: V8

    1975 PONTIAC GRANDVILLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1980-1985 OLDSMOBILE DELTA 88

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: ROYALE BROUGHAM
    • EngineType: V8

    1979 FORD F-100

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: RANGER
    • EngineType: V8

    1980 OLDSMOBILE DELTA 88

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: ROYALE BROUGHAM
    • CUI: 350
    • EngineType: V8

    1969-1970 MERCURY COUGAR

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: XR-7
    • EngineType: V8

    1980 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8

    1977 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: COLONNADE

    1968-1970 FORD FAIRLANE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: 500
    • EngineType: V8

    1980 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: LS
    • EngineType: V8

    1970-1971 FORD LTD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BROUGHAM
    • EngineType: V8

    1977-1978 CHEVROLET CAMARO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: LT

    1988-1992 GMC K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SIERRA
    • EngineType: V8

    1968-1969 CHEVROLET CAPRICE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.3
    • SubModel: BASE
    • EngineType: V8

    1983-1996 GMC G35/G3500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: VANDURA
    • EngineType: V8

    1972-1974 PONTIAC GRAND PRIX

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1982-1985 BUICK LESABRE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CUSTOM
    • EngineType: V8

    1973-1979 FORD F-350

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • EngineType: V8

    1979-1980 FORD E-250 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: CHATEAU
    • EngineType: V8

    1969-1972 CHEVROLET CHEVELLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CONCOURS ESTATE
    • EngineType: V8

    1972 FORD THUNDERBIRD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: ALL

    1977 OLDSMOBILE DELTA 88

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1995 CHEVROLET C2500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: LS
    • EngineType: V8

    1990-1995 CHEVROLET K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: WT
    • EngineType: V8

    1968-1973 CHEVROLET C10 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • EngineType: V8

    1969-1972 FORD BRONCO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1975-1976 CADILLAC FLEETWOOD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: 60 SPECIAL BROUGHAM

    1966-1969 CHEVROLET CAPRICE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.4
    • SubModel: BASE
    • EngineType: V8

    1972 GMC C1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1974-1975 GMC SPRINT

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: CUSTOM
    • EngineType: V8

    1968 FORD E-300 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: V8
    • SubModel: BASE

    1977-1987 CHEVROLET CAMARO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: Z28

    1987-1988 CHEVROLET R20 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • EngineType: V8

    1981-1982 FORD E-350 ECONOLINE CLUB WAGON

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CHATEAU

    1975-1977 PONTIAC BONNEVILLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: ALL
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