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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 Teflon 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 Teflon Seals

  • Positive Stop Teflon
  • 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 Teflon 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 Teflon 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 Teflon 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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    1963-1964 FORD CLUB CARGO

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

    1978-1979 BUICK REGAL

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

    1984 FORD F-150

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

    1975 PONTIAC LEMANS

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

    1985-1986 GMC C3500 PICKUP

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

    1977-1982 FORD F-250

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

    1970 FORD E-200 ECONOLINE

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

    1969-1974 GMC K25/K2500 PICKUP

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

    1984-1986 CHEVROLET K10 SUBURBAN

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

    1973 FORD GRAN TORINO

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

    1985 CHEVROLET C30 PICKUP

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

    1974 CHEVROLET G10 VAN

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

    1987-1988 FORD E-250 ECONOLINE

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

    1972 MERCURY MONTEREY

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

    1970 CHEVROLET CHEVELLE

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

    1979-1981 FORD F-350

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

    1993-1994 GMC K1500

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

    1974 MERCURY MONTEGO

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

    1972-1974 PONTIAC GRAND PRIX

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

    1975-1979 CHEVROLET K20 SUBURBAN

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

    1985-1986 CHEVROLET K10 SUBURBAN

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

    1974 CHEVROLET NOVA

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

    1992-1994 CHEVROLET K1500 SUBURBAN

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

    1975-1977 FORD MAVERICK

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8

    1977-1978 BUICK LESABRE

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

    1977 BUICK SKYLARK

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

    1977-1978 FORD F-100

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

    1985-1986 GMC K2500 SUBURBAN

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

    1993 GMC K1500

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

    1969-1972 CHEVROLET CAPRICE

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

    1955-1957 CHEVROLET TRUCK

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

    1983-1986 CHEVROLET K30 PICKUP

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

    1975 CHEVROLET IMPALA

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

    1979 CADILLAC FLEETWOOD

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

    1976 CHEVROLET CAPRICE

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

    1980 OLDSMOBILE CUTLASS

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

    1968-1982 GMC G25/G2500 VAN

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

    1972-1974 PONTIAC CATALINA

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

    1994 CHEVROLET BLAZER

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

    1978-1980 BUICK ELECTRA

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

    1990 GMC V2500 SUBURBAN

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

    1978-1979 PONTIAC BONNEVILLE

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

    1970-1972 GMC G25/G2500 VAN

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

    1978-1979 PONTIAC SUNBIRD

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

    1974-1975 CHEVROLET MALIBU

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

    1973 CHEVROLET BLAZER

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

    1966-1967 MERCURY VOYAGER

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.7
    • SubModel: BASE
    • EngineType: V8

    1985-1995 CHEVROLET G20 VAN

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

    1985-1988 CHEVROLET MONTE CARLO

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

    1986 PONTIAC PARISIENNE

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

    1974 GMC C15/C1500 SUBURBAN

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

    1970 OLDSMOBILE CUTLASS

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

    1979-1980 CHEVROLET MALIBU

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

    1965 CHEVROLET CHEVELLE

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

    1977 OLDSMOBILE DELTA 88

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

    1993 GMC K1500

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

    1973 BUICK CENTURY

    • Liter: 7.5
    • EngineType: V8
    • SubModel: LUXUS

    1985-1986 CHEVROLET K20 SUBURBAN

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

    1985-1986 FORD F-150

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

    1988-1993 GMC K2500 PICKUP

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

    1980 PONTIAC GRAND LEMANS

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

    1974 GMC C25/C2500 PICKUP

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

    1974 CHEVROLET MALIBU

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

    1971 FORD COUNTRY SEDAN

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

    1987-1988 CHEVROLET R20 SUBURBAN

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

    1973-1974 FORD RANCH WAGON

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

    1987 CHEVROLET V10 PICKUP

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

    1987-1988 CHEVROLET V10 SUBURBAN

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

    1971 MERCURY CYCLONE

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

    1985-1986 GMC K1500 PICKUP

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

    1971-1974 FORD MAVERICK

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

    1973 CHEVROLET CAMARO

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

    1975 CHEVROLET K20 PICKUP

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

    1972-1973 OLDSMOBILE CUTLASS

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

    1995 FORD BRONCO

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

    1968 OLDSMOBILE 442

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

    1968 CHEVROLET CHEVELLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: 300
    • EngineType: V8

    1969-1970 FORD TORINO

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

    1974 MERCURY COLONY PARK

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

    1970 MERCURY COUGAR

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: XR-7
    • EngineType: V8

    1985-1986 GMC C2500 PICKUP

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

    1985-1986 GMC K3500 PICKUP

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

    1973-1974 MERCURY MONTEGO

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

    1972-1973 OLDSMOBILE CUTLASS

    • CC: 5733
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8

    1976 CHEVROLET CAPRICE

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

    1972 CHEVROLET CHEVELLE

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

    1977-1979 BUICK SKYLARK

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

    1989-1991 CHEVROLET V1500 SUBURBAN

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

    1969-1970 MERCURY MONTEREY

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.0
    • SubModel: CUSTOM
    • EngineType: V8

    1974 PONTIAC VENTURA

    • CC: 5733
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: GTO
    • EngineType: V8

    1971 FORD COUNTRY SEDAN

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

    1975-1976 BUICK ESTATE WAGON

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8

    1968 CHEVROLET C20 SUBURBAN

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

    1979-1980 OLDSMOBILE CUTLASS SALON

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

    1985-1995 CHEVROLET G10 VAN

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

    1982 CHEVROLET C10 SUBURBAN

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

    1964-1965 PONTIAC LEMANS

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

    1966 CHEVROLET CHEVELLE

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

    1968 MERCURY COUGAR

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: XR-7
    • EngineType: V8

    1971 PONTIAC LEMANS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: T37
    • EngineType: V8
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