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B&M Adjustable Vacuum Modulator GM TH350 & TH400

B&M 20234

130-20234

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B&M Adjustable Vacuum Modulator GM TH350 & TH400 $34.99
Adjustable Vacuum Modulator
  • GM TH350/TH400

  • Specifications:

    Modulator Valve Finish
    Gold iridited
    Modulator Valve Material
    Steel
    Quantity
    Sold individually
    Manufacturer's Part Number:
    20234

    Adjust Vacuum and Shift Points

    B&M’s Vacuum Modulator is fully adjustable, allowing you to tailor your shift points to within a range of 2-4 mph. Equipped with a gold irradiated finish and an O-ring seal to stop leaks. Comes supplied pre-adjusted for normal shift points.

    Features:
  • Fully Adjustable.
  • Tailors To Custom Shift Points.
  • Comes Supplied With Pre-Adjusted Shift Points.

    Note: If your engine does not make adequate vacuum you will not be able to make the stock or B&M modulator work properly; usually resulting in late, hard shifts.

  • Does B&M 20234 fit your vehicle?

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    1976 CHEVROLET MALIBU

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: CLASSIC ESTATE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 CHEVROLET MALIBU

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: CLASSIC ESTATE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971 BUICK CENTURION

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1970-1971 PONTIAC FIREBIRD

    • CC: 5733
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 CHEVROLET MALIBU

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: CLASSIC ESTATE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 BUICK CENTURION

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1972-1974 PONTIAC FIREBIRD

    • CC: 5737
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 GMC C3500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1978-1980 CHEVROLET MONTE CARLO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: LANDAU
    • EngineType: ALL

    1969 CHEVROLET K20 SUBURBAN

    • CC: 5736
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 CHEVROLET MALIBU

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: CLASSIC LANDAU
    • EngineType: ALL

    1969 GMC C1500 PICKUP

    • CC: 4801
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1973 CHEVROLET CAMARO

    • CC: 5737
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 BUICK CENTURY

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1970 PONTIAC FIREBIRD

    • CC: 6555
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974 CHEVROLET K20 SUBURBAN

    • CC: 4098
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972 CHEVROLET G10 VAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1967 CHEVROLET P10 SERIES VAN

    • CC: 4098
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1980 GMC C3500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 GMC K25/K2500 SUBURBAN

    • CC: 4801
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1974 CHEVROLET MONTE CARLO

    • CC: 5737
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: LANDAU
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971 CHEVROLET K20 SUBURBAN

    • CC: 5736
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 PONTIAC LEMANS

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: CLASSIC LANDAU
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981 GMC C1500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973 CHEVROLET CAMARO

    • CC: 5737
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC FIREBIRD

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: TRANS AM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975 BUICK CENTURY

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: BASE
    • EngineType: ALL

    1968 CHEVROLET EL CAMINO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: SS
    • EngineType: ALL

    1980 CHEVROLET MONTE CARLO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 3.8
    • SubModel: SPORT
    • CUI: 229
    • EngineType: V6 ( 3.8 L / 229 )

    1974 PONTIAC FIREBIRD

    • CC: 6555
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1967 BUICK GRAN SPORT

    • CC: 5573
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.6
    • SubModel: BASE
    • CUI: 340
    • EngineType: V8 ( 5.6 L / 340 )

    1969 CHEVROLET K20 SUBURBAN

    • CC: 4801
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975 CHEVROLET G10 VAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1976 CHEVROLET CAMARO

    • CC: 5031
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: LT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1990 CHEVROLET K3500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: SILVERADO
    • EngineType: ALL

    1966 CHEVROLET P20 SERIES VAN

    • CC: 4098
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977 PONTIAC CATALINA

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1981 GMC K2500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1979 GMC C3500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 GMC K25/K2500 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1973 CHEVROLET MONTE CARLO

    • CC: 5737
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: LANDAU
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 GMC C25/C2500 SUBURBAN

    • CC: 4097
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1969 CHEVROLET K20 SUBURBAN

    • CC: 5736
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 PONTIAC ASTRE

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: BASE
    • EngineType: ALL

    1988-1990 CHEVROLET C2500 PICKUP

    • CC: 5735
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: CHEYENNE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: CUSTOM
    • EngineType: ALL

    1969 PONTIAC LEMANS

    • CC: 5733
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: SAFARI
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 CHEVROLET MALIBU

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CLASSIC LANDAU
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: CUSTOM DELUXE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1968 GMC C1500 PICKUP

    • CC: 5031
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1971 PONTIAC GRANDVILLE

    • CC: 7456
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1975 OLDSMOBILE CUTLASS SUPREME

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 7.5
    • SubModel: BASE
    • CUI: 455
    • EngineType: V8 ( 7.5 L / 455 )

    1973 CHEVROLET CAMARO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: LT
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1972 CHEVROLET C10 SUBURBAN

    • CC: 6588
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1970 PONTIAC FIREBIRD

    • CC: 6555
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: TRANS AM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980 BUICK CENTURY

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: BASE
    • EngineType: ALL

    1979-1980 GMC K3500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1969 CHEVROLET EL CAMINO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: SS
    • EngineType: ALL

    1978-1980 CHEVROLET MONZA

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1976 CHEVROLET MONTE CARLO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: S
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980 PONTIAC FIREBIRD

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: ESPRIT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1967 BUICK GRAN SPORT

    • CC: 6555
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1982 CHEVROLET K10 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: SCOTTSDALE
    • EngineType: ALL

    1973 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1974 CHEVROLET G10 VAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 GMC C15/C1500 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 CHEVROLET CAMARO

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: RALLY SPORT
    • EngineType: ALL

    1977-1978 GMC K15 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1987 CHEVROLET V10 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1972 PONTIAC LEMANS

    • CC: 6556
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975 CHEVROLET NOVA

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.3
    • SubModel: CUSTOM
    • CUI: 262
    • EngineType: V8 ( 4.3 L / 262 )

    1972 CHEVROLET KINGSWOOD

    • CC: 4097
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1965-1967 CHEVROLET P20 SERIES VAN

    • CC: 4801
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1973 GMC K25/K2500 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978 PONTIAC CATALINA

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 403
    • EngineType: V8 ( 6.6 L / 403 )

    1979-1980 GMC K2500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: HIGH SIERRA
    • EngineType: ALL

    1968 GMC K35/K3500 PICKUP

    • CC: 6489
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1982 CHEVROLET G10 VAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: CHEVY VAN
    • EngineType: ALL

    1989-1990 GMC C3500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: SIERRA SLE
    • EngineType: ALL

    1975-1978 GMC P35 VAN

    • EngineType: ALL
    • SubModel: ALL

    1973-1974 GMC SPRINT

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1973 GMC G25/G2500 VAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: VANDURA
    • EngineType: ALL

    1979-1981 GMC C1500 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: ALL
    • EngineType: ALL

    1976 GMC C1500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973 CHEVROLET EL CAMINO

    • CC: 5031
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1965-1967 PONTIAC CATALINA

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: BASE
    • EngineType: ALL

    1969-1972 GMC K25/K2500 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1968 OLDSMOBILE VISTA CRUISER

    • CC: 5737
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 PONTIAC GRAND PRIX

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.7
    • SubModel: LJ
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 CHEVROLET MONTE CARLO

    • CC: 6556
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: LANDAU
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1974 PONTIAC BONNEVILLE

    • CC: 6556
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 GMC C25/C2500 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 4.8
    • SubModel: BASE
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1973 CHEVROLET K20 SUBURBAN

    • CC: 7439
    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 7.4
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979 CHEVROLET CAPRICE

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 5.0
    • SubModel: CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981 CHEVROLET K30 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: DELUXE
    • EngineType: ALL

    1976 PONTIAC ASTRE

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: CUSTOM
    • EngineType: ALL

    1979-1981 GMC C1500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: STREET COUPE
    • EngineType: ALL

    1988-1990 CHEVROLET C2500 PICKUP

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • Liter: 6.2
    • SubModel: CHEYENNE
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1981 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Must Have Adequate Vacuum To Make Modulator Work Properly
    • SubModel: CUSTOM
    • EngineType: ALL
    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations