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COMP Cams 503-1

Positive Stop PTFE Seal Guide Size: .530"

COMP Cams 503-1
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249-503-1

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COMP Cams 503-1 Positive Stop PTFE Seal Guide Size: .530" $1.99
Positive Stop PTFE Seal
  • Guide Size: .530''
  • Valve Size: 11/32''
  • 1/pkg

  • COMP Cams 503-1 Details

    Positive Stop PTFE Seals

  • 1 Year Limited Warranty

  • Specifications:

    Diameter (in.)
    0.34375
    Machine Work Required
    Yes
    Quantity
    Sold individually
    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:
    503-1

    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 COMP Cams 503-1 fit your vehicle?

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    1993 FORD BRONCO

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

    1987-1991 FORD E-150 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1970 MERCURY CYCLONE

    • CC: 7030
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.0
    • Aspiration: N
    • SubModel: SPOILER
    • Engine Vin: N
    • CUI: 429
    • EngineType: V8 ( 7.0 L / 429 )

    1963-1967 FORD GALAXIE

    • CC: 4727
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 289
    • EngineType: V8 ( 4.7 L / 289 )

    1975-1978 FORD E-250 ECONOLINE CLUB WAGON

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: NORTHLAND
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1987 CHEVROLET CAMARO

    • CC: 5031
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1989 PONTIAC 6000

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

    1994-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969 FORD FAIRLANE

    • CC: 7014
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.0
    • Aspiration: N
    • SubModel: 500
    • Engine Vin: Q
    • CUI: 428
    • EngineType: V8 ( 7.0 L / 428 )

    1980-1981 OLDSMOBILE OMEGA

    • CC: 2474
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 2.5
    • SubModel: SX
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1972 PONTIAC GRAND SAFARI

    • CC: 7457
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1991-1993 FORD THUNDERBIRD

    • Liter: 5.0
    • SubModel: LX
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1980-1985 OLDSMOBILE DELTA 88

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: ROYALE BROUGHAM
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1970 FORD LTD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1968-1969 PONTIAC FIREBIRD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • EngineType: ALL
    • SubModel: 350

    1978 PONTIAC BONNEVILLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BROUGHAM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1978 PONTIAC PHOENIX

    • CC: 2474
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 2.5
    • SubModel: BASE
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1987-1993 CHEVROLET G10 VAN

    • CC: 5031
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: SPORTVAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976-1977 PONTIAC GRAND PRIX

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1984-1986 FORD THUNDERBIRD

    • Liter: 5.0
    • SubModel: ELAN
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1987-1988 CHEVROLET R20 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1963 MERCURY COUNTRY CRUISER

    • CC: 3622
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.6
    • SubModel: BASE
    • CUI: 221
    • EngineType: V8 ( 3.6 L / 221 )

    1987-1988 CHEVROLET R20 PICKUP

    • CC: 5031
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977 MERCURY COUGAR

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

    1970-1972 FORD MUSTANG

    • CC: 4950
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1970-1974 OLDSMOBILE VISTA CRUISER

    • CC: 7456
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 FORD E-250 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CHATEAU
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1975-1979 FORD F-150

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: RANGER
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1975 OLDSMOBILE TORONADO

    • EngineType: ALL
    • SubModel: BROUGHAM

    1974 PONTIAC CATALINA

    • CC: 6556
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1963 PONTIAC CATALINA

    • CC: 6376
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.4
    • Aspiration: N
    • SubModel: VENTURA
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1983-1984 FORD F-350

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: XL
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1963 FORD FORD 300

    • CC: 4261
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 260
    • EngineType: V8 ( 4.3 L / 260 )

    1986 CHEVROLET CAPRICE

    • CC: 5031
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CLASSIC BROUGHAM
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1982-1987 OLDSMOBILE CUTLASS SUPREME

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1974 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1988-1995 CHEVROLET K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 BUICK RIVIERA

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: T-TYPE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1976 MERCURY MONTEGO

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

    1962-1966 PONTIAC GRAND PRIX

    • CC: 6376
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.4
    • SubModel: BASE
    • CUI: 389
    • EngineType: V8 ( 6.4 L / 389 )

    1983-1984 FORD F-350

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: XLT
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1971 FORD RANCHERO

    • CC: 7030
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.0
    • Aspiration: N
    • SubModel: 500
    • Engine Vin: J
    • CUI: 429
    • EngineType: V8 ( 7.0 L / 429 )

    1963 PONTIAC CATALINA

    • CC: 6900
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.9
    • Aspiration: N
    • SubModel: BASE
    • CUI: 421
    • EngineType: V8 ( 6.9 L / 421 )

    1981-1982 FORD LTD

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1982-1983 FORD BRONCO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: XLS
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1980 PONTIAC GRAND PRIX

    • Liter: 4.3
    • SubModel: LJ
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1981-1984 OLDSMOBILE OMEGA

    • CC: 2474
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 2.5
    • SubModel: ES
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )

    1970 PONTIAC SAFARI

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

    1970-1974 CADILLAC FLEETWOOD

    • CC: 7735
    • Liter: 7.7
    • SubModel: BASE
    • CUI: 472
    • EngineType: V8 ( 7.7 L / 472 )

    1970 MERCURY CYCLONE

    • CC: 4949
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: GT
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1983-1984 FORD F-150

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: XLT
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1980-1981 OLDSMOBILE 98

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: LUXURY
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1993 CHEVROLET K2500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SLE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1976 LINCOLN MARK IV

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

    1974 PONTIAC LEMANS

    • CC: 5737
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982 FORD F-350

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: XL
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968 FORD E-100 ECONOLINE

    • CC: 4950
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1979 PONTIAC LEMANS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.9
    • SubModel: SAFARI
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1977 PONTIAC VENTURA

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.9
    • SubModel: BASE
    • CUI: 301
    • EngineType: V8 ( 4.9 L / 301 )

    1989-1991 CHEVROLET R2500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 PONTIAC CATALINA

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

    1979-1982 FORD E-350 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1987-1994 CHEVROLET G30 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: BEAUVILLE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 MERCURY MARQUIS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1987-1989 CHEVROLET CORVETTE

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

    1977-1978 BUICK LESABRE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1966-1967 FORD GT40

    • CC: 4727
    • Liter: 4.7
    • SubModel: MK III
    • CUI: 289
    • EngineType: V8 ( 4.7 L / 289 )

    1977 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: COLONNADE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1976 OLDSMOBILE CUTLASS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: S
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1984-1986 FORD E-350 ECONOLINE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1975 PONTIAC GRAND LEMANS

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

    1982 FORD F-350

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: XLS
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1994 CHEVROLET BLAZER

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SILVERADO SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987-1989 CHEVROLET G20 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SPORTVAN
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982 MERCURY MARQUIS

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1980-1981 PONTIAC GRAND LEMANS

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 265
    • EngineType: V8 ( 4.3 L / 265 )

    1987 FORD E-150 ECONOLINE CLUB WAGON

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

    1985 OLDSMOBILE CUTLASS SUPREME

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: LS
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1970-1974 MERCURY MONTEGO

    • CC: 4949
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.0
    • SubModel: VILLAGER
    • CUI: 302
    • EngineType: V8 ( 5.0 L / 302 )

    1973-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • Aspiration: N
    • SubModel: TRANS AM
    • Engine Vin: Y
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1969-1974 FORD COUNTRY SEDAN

    • CC: 5753
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BASE
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1973 CHEVROLET CHEVELLE

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: DELUXE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1963 FORD FORD 300

    • CC: 4727
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 289
    • EngineType: V8 ( 4.7 L / 289 )

    1989-1991 CHEVROLET V2500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 PONTIAC LEMANS

    • CC: 7457
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: SPORT
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1980 BUICK ELECTRA

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE WAGON
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET LAGUNA

    • CC: 5737
    • Liter: 5.7
    • Aspiration: N
    • SubModel: ESTATE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 MERCURY MARQUIS

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BROUGHAM
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1972-1974 OLDSMOBILE DELTA 88

    • CC: 7457
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1964-1967 FORD CUSTOM 500

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.7
    • SubModel: BASE
    • CUI: 289
    • EngineType: V8 ( 4.7 L / 289 )

    1973 FORD GRAN TORINO

    • CC: 5753
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 5.8
    • SubModel: BROUGHAM
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1968 OLDSMOBILE CUTLASS

    • CC: 6555
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972 CHEVROLET CAMARO

    • CC: 5737
    • Liter: 5.7
    • SubModel: RS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1986 CADILLAC FLEETWOOD

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

    1978 PONTIAC BONNEVILLE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: SAFARI
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974 FORD GALAXIE 500

    • CC: 7539
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 460
    • EngineType: V8 ( 7.5 L / 460 )

    1972-1974 PONTIAC FIREBIRD

    • CC: 7456
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 7.5
    • Aspiration: N
    • SubModel: FORMULA
    • Engine Vin: X
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1971-1974 FORD COUNTRY SQUIRE

    • CC: 6556
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1968 FORD BRONCO

    • CC: 4727
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.7
    • SubModel: WAGON
    • CUI: 289
    • EngineType: V8 ( 4.7 L / 289 )

    1982-1983 OLDSMOBILE CUTLASS CIERA

    • CC: 2474
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 2.5
    • SubModel: BROUGHAM
    • CUI: 151
    • EngineType: L4 ( 2.5 L / 151 )
    503-1 - Comp Cams Valve Stem Seals is rated 1.0 out of 5 by 1.
    Rated 1 out of 5 by from Junk They are .530 but they won't hold , I used the comp valve guide cutter for these and they just pop off . Use metal capped viton seals . They are way better ! And tight fit !
    Date published: 2017-06-01
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