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COMP Cams 503-12

Positive Stop PTFE Seal Guide Size: .530"

COMP Cams 503-12

249-503-12

jegs shipping
Estimated ship date 01/22/18 if Ordered Today
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COMP Cams 503-12 Positive Stop PTFE Seal Guide Size: .530" $16.99
Positive Stop PTFE Seal
  • Guide Size: .530''
  • Valve Size: 11/32''
  • 12/pkg

  • COMP Cams 503-12 Details

    Positive Stop PTFE Seals

  • 1 Year Limited Warranty

  • Specifications:

    Diameter (in.)
    0.34375
    Machine Work Required
    Yes
    Quantity
    Sold as a set of 12
    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:
    503-12

    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 503-12 fit your vehicle?

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    Aspiration

    1975-1984 GMC K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SIERRA CLASSIC
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1967 CHEVROLET MALIBU

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1988-2003 CHEVROLET S10 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1978-1979 CHEVROLET G30 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: CHEVY VAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1983 FORD F-250

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

    1967 CHEVROLET CHEVY II

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1971 GMC G35/G3500 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: RALLY
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1970-1974 CHEVROLET EL CAMINO

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1984 GMC K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972-1974 GMC K25/K2500 PICKUP

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974 CHEVROLET K10 SUBURBAN

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987 CHEVROLET R10 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: SILVERADO
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1979 CHEVROLET NOVA

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1999-2003 CHEVROLET S10 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: XTREME
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1967 CHEVROLET EL CAMINO

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1983-1984 CHEVROLET G20 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BONAVENTURE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1969 CHEVROLET EL CAMINO

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1983 FORD F-350

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

    1994-1997 CHEVROLET C1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1987-1990 CHEVROLET ASTRO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1969-1971 CHEVROLET K10 SUBURBAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1980 CHEVROLET C10 SUBURBAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: CUSTOM DELUXE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1979 FORD F-350

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

    1977 GMC K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: INDY HAULER
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    2000-2001 CHEVROLET S10 BLAZER

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

    1986-1990 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 )

    1991-1994 OLDSMOBILE BRAVADA

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

    1979-1984 GMC C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975 GMC C25/C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SIERRA CLASSIC
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979 FORD F-100

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

    1964-1966 CHEVROLET CHEVY II

    • CC: 3180
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.2
    • SubModel: NOVA SS
    • CUI: 194
    • EngineType: L6 ( 3.2 L / 194 )

    1967-1969 CHEVROLET CHEVELLE

    • CC: 3769
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.8
    • SubModel: 300 DELUXE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1971 CHEVROLET G30 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975-1984 CHEVROLET G10 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SPORTVAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1983-1986 FORD F-350

    • 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 GMC G35/G3500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: VANDURA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1969 CHEVROLET CHEVELLE

    • CC: 3769
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.8
    • SubModel: MALIBU
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1979 CHEVROLET CAMARO

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BERLINETTA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978 GMC K25 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: HIGH SIERRA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    2001-2003 CHEVROLET S10 BLAZER

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

    1977 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 )

    1968-1969 GMC G25/G2500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: RALLY
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1967-1969 CHEVROLET G20 VAN

    • CC: 3769
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1988-1992 CHEVROLET S10 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: TAHOE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1975 GMC G15/G1500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: RALLY STX
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968 GMC K25/K2500 SUBURBAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1993-1994 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 )

    1964-1965 CHEVROLET G10 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.2
    • SubModel: BASE
    • CUI: 194
    • EngineType: L6 ( 3.2 L / 194 )

    1978-1979 CHEVROLET NOVA

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: CUSTOM
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1971 CHEVROLET G20 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SPORTVAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976 CHEVROLET NOVA

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: CONCOURS
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1967-1968 CHEVROLET CHEVY II

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: NOVA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1995 CHEVROLET G20 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BEAUVILLE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1967-1973 CHEVROLET CAMARO

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1970 CHEVROLET G10 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SPORTVAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972-1973 CHEVROLET IMPALA

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1996-1997 CHEVROLET EXPRESS 1500

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    2003 CHEVROLET SILVERADO 1500

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1975 GMC C35/C3500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: HIGH SIERRA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987 PONTIAC GRAND PRIX

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: LE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1972-1974 GMC K1500 PICKUP

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968 CHEVROLET CHEVELLE

    • CC: 3769
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.8
    • SubModel: CONCOURS
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1972-1973 CHEVROLET BEL AIR

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977 CHEVROLET MALIBU

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SPORT
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980 GMC K2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SIERRA CLASSIC
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1972 CHEVROLET CHEVELLE

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: MALIBU
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975 GMC SPRINT

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: HIGH SIERRA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1991 CHEVROLET K1500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: SPORT
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1975-1979 FORD F-350

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

    1976 CHEVROLET G30 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: CHEVY VAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1995 CHEVROLET G30 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: HI-CUBE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1972-1974 GMC G35/G3500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: RALLY
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1988 CHEVROLET CAPRICE

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: CLASSIC BROUGHAM
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1969-1970 CHEVROLET G10 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972-1974 CHEVROLET G10 VAN

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SPORTVAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1991-1999 CHEVROLET S10 BLAZER

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

    1978 GMC K25 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SIERRA GRANDE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1984 GMC C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: HIGH SIERRA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968 GMC K15/K1500

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

    1985-1992 FORD F-250

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

    1983-1986 FORD F-250

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

    1969 CHEVROLET G10 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1988-1995 CHEVROLET C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: CHEYENNE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1977-1978 GMC C25/C2500 PICKUP

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: HIGH SIERRA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1964-1967 CHEVROLET MALIBU

    • CC: 3769
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 3.8
    • SubModel: BASE
    • CUI: 230
    • EngineType: L6 ( 3.8 L / 230 )

    1971 CHEVROLET G30 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: SPORTVAN
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1974-1975 CHEVROLET CAMARO

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978 CHEVROLET NOVA

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: POLICE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972-1974 CHEVROLET G30 VAN

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1972 CHEVROLET CHEVELLE

    • CC: 4098
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: NOMAD
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1969 GMC G15/G1500 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: RALLY
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974 FORD F-350

    • 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 )

    1971 GMC G35/G3500 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • Aspiration: N
    • SubModel: RALLY
    • Engine Vin: C
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1967 CHEVROLET CHEVELLE

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: 300 DELUXE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1968-1971 GMC C1500 PICKUP

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979 FORD F-100

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

    1979-1980 GMC C1500 SUBURBAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1980 CHEVROLET BLAZER K5

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: CHEYENNE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978-1979 CHEVROLET G30 VAN

    • CC: 4097
    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.1
    • SubModel: HI-CUBE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1987-1989 CHEVROLET G10 VAN

    • Fitment_Note: Requires Machining On Cylinder Heads~50-State Legal
    • Liter: 4.3
    • SubModel: SPORTVAN
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )
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