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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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    1975-1976 MERCURY MONTEGO

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

    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

    1987-1991 GMC R2500 SUBURBAN

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

    1969-1970 FORD TORINO

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

    1970-1971 MERCURY CYCLONE

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

    1970 MERCURY MONTEGO

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

    1969-1974 CHEVROLET K20 SUBURBAN

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

    1973 FORD GRAN TORINO

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

    1973 OLDSMOBILE 98

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

    1975 GMC G35/G3500 VAN

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

    1972-1973 OLDSMOBILE CUTLASS SUPREME

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

    1963 FORD GALAXIE

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

    1977-1979 FORD LTD II

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

    1978-1979 MERCURY ZEPHYR

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

    1965-1967 CHEVROLET CHEVELLE

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

    1983-1985 FORD E-150 ECONOLINE CLUB WAGON

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

    1983-1989 CHEVROLET G20 VAN

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

    1986 GMC C3500 PICKUP

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

    1971-1974 GMC G25/G2500 VAN

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

    1976-1980 CHEVROLET C20 PICKUP

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

    1983 FORD E-150 ECONOLINE

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

    1981 GMC C1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8

    1991-1992 FORD BRONCO

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

    1973 OLDSMOBILE CUSTOM CRUISER

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

    1963 FORD FALCON

    • EngineType: ALL
    • SubModel: FUTURA SPRINT

    1981-1982 FORD LTD

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

    1975-1976 BUICK LESABRE

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

    1992 CHEVROLET CAMARO

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

    1968 CHEVROLET CHEVY II

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

    1995 FORD F-250

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

    1967 GMC K25/K2500 PICKUP

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

    1988-1992 GMC K1500 PICKUP

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

    1987 CHEVROLET R20 SUBURBAN

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

    1964 STUDEBAKER CRUISER

    • Liter: 4.7
    • EngineType: V8
    • SubModel: BASE

    1974 CADILLAC FLEETWOOD

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

    1980-1981 PONTIAC GRAND LEMANS

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

    1975-1976 CHEVROLET IMPALA

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

    1973 FORD COUNTRY SQUIRE

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

    1991-1992 FORD BRONCO

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

    1985-1986 GMC C2500 PICKUP

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

    1974 PONTIAC LEMANS

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

    1987 PONTIAC FIREBIRD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: TRANS AM
    • CUI: 305
    • EngineType: V8

    1980-1981 OLDSMOBILE CUTLASS CRUISER

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

    1959-1960 PONTIAC CATALINA

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

    1992-1993 FORD E-350 ECONOLINE CLUB WAGON

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

    1989 FERRARI 412

    • EngineType: ALL
    • SubModel: ALL

    1978-1979 CHEVROLET NOVA

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

    1970 FORD E-200 ECONOLINE

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

    1988-1992 GMC K1500 PICKUP

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

    1972 CHEVROLET CHEVELLE

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

    1973-1974 CHEVROLET MALIBU

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

    1973 CHEVROLET IMPALA

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

    1975-1978 FORD E-350 ECONOLINE

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

    1968-1969 CADILLAC DEVILLE

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

    1981 FORD F-100

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

    1965 CHEVROLET CHEVELLE

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

    1981-1982 FORD LTD

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

    1992-1994 GMC C1500 SUBURBAN

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

    1967-1969 PONTIAC GTO

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

    1978-1979 BUICK ELECTRA

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

    1972 BUICK SKYLARK

    • Liter: 7.5
    • EngineType: V8
    • SubModel: BASE

    1979-1980 OLDSMOBILE CUTLASS CALAIS

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

    1968-1973 GMC C25/C2500 SUBURBAN

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

    1994 GMC K1500

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

    1980 CHEVROLET G30 VAN

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

    1975 GMC K25 PICKUP

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

    1979-1980 FORD E-350 ECONOLINE

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

    1985-1987 CHEVROLET EL CAMINO

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

    1983 OLDSMOBILE CUTLASS CALAIS

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

    1975-1978 GMC C25/C2500 PICKUP

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

    1975 CHEVROLET CAMARO

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

    1988-1993 GMC C2500 PICKUP

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

    1974 MERCURY COLONY PARK

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

    1968-1971 FORD COUNTRY SQUIRE

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

    1973-1974 FORD LTD

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

    1968-1973 CADILLAC FLEETWOOD

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

    1974 MERCURY MONTEGO

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

    1971 OLDSMOBILE CUTLASS

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

    1985-1986 GMC C2500 SUBURBAN

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

    1973 CHEVROLET CHEVELLE

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

    1993 GMC K1500

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

    1987-1988 CHEVROLET V30 PICKUP

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

    1981-1982 CHEVROLET CAPRICE

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

    1995 CHEVROLET TAHOE

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

    1995 CHEVROLET C2500 SUBURBAN

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

    1973 MERCURY MONTEGO

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

    1971 MERCURY MONTEGO

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

    1978-1980 PONTIAC CATALINA

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

    1989 FORD E-250 ECONOLINE

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

    1979 OLDSMOBILE CUTLASS SALON

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

    1987 GMC V1500 PICKUP

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

    1964 MERCURY CYCLONE

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

    1970 FORD RANCHERO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.0
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 429
    • EngineType: V8

    1977 BUICK LESABRE

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

    1976-1977 GMC K25 SUBURBAN

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

    1975 CHEVROLET C30 PICKUP

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

    1972 MERCURY MONTEREY

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

    1980-1981 CHEVROLET CAMARO

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

    1987 GMC V2500 PICKUP

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

    1995 GMC K1500 PICKUP

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