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Flowmaster 42443

40 Series Original Muffler Offset In/Offset Out: 2.25"

Flowmaster 42443
Flowmaster® Rebate
Expires on February 28, 2018

The purchase of any Flowmaster Exhaust System, and/or Cold Air Intakes of $374.99 or less will receive a $25.00 rebate.

The purchase of any Flowmaster Exhaust System, and/or Cold Air Intakes between $375.00 and $499.99 will receive a $50.00 rebate.

The purchase of any Flowmaster Exhaust System, and/or Cold Air Intakes of $500.00 or more will receive a $75.00 rebate.

View All Flowmaster Products

389-42443

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Flowmaster 42443 40 Series Original Muffler Offset In/Offset Out: 2.25" $85.86
40 Series Original Muffler
  • Offset In/Offset Out: 2.25"
  • Aluminized Steel

  • Flowmaster 42443 Details

    Offset In/Offset Out

    Universal Muffler - Not a direct fit. Some adaptation required.

  • Durable Fully Welded 16ga Aluminized Steel
  • 3 Year Limited Warranty
  • Aggressive And Powerful Exterior Exhaust Tone
  • Notable Interior Resonance
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • The Original Two Chamber Design
  • www.Flowmastermufflers.com

  • Specifications:

    Body Length (in.)
    13
    Overall Length (in.)
    19
    Inlet Size (in.)
    2.25
    Outlet Size (in.)
    2.25
    Body Height (in.)
    4
    Body Width (in.)
    9.75
    Width (in.)
    9.75
    Material
    Aluminized Steel
    Shape
    Oval
    Inlet Type
    Single Offset Inlet
    Outlet Type
    Single Offset Outlet
    Inlet Position
    Offset
    Outlet Position
    Offset
    Muffler Count
    1
    Inlet Connection Type
    Pipe Connection
    Sound Level
    Aggressive Sound
    Muffler Type
    Reflection
    Outlet Location
    Offset
    Case Length (in.)
    13
    Case Shape
    Oval
    Internal Construction
    Chambered
    Muffler Finish
    Aluminized
    Muffler Material
    Steel
    Outlet Style
    Standard, without tip
    Quantity
    Sold individually
    Outlet Quantity
    One
    Thickness (in.)
    4
    Inlet Location
    Offset
    Inlet Diameter (in.)
    2.25
    Outlet Diameter (in.)
    2.25
    Inlet Quantity
    One
    Manufacturer's Part Number:
    42443

    The Muffler That Started It All!

    Flowmaster's 40 Series Original Mufflers are designed for street/strip and off-road use. These aggressive sounding mufflers deliver a powerful, classic "Flowmaster Sound" from both inside and outside of the vehicle. Give your exhaust system a great muscle car tone with one of these fully MIG welded 40 Series original mufflers.

    Features:
  • The original high-performance muffler
  • Aggressive sound
  • Stainless steel
  • Fully MIG welded


  • Does Flowmaster 42443 fit your vehicle?

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    2010 CHRYSLER 300

    • EngineType: ALL
    • SubModel: S

    1973 CHEVROLET CAPRICE

    • CC: 6556
    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974 CHEVROLET C10 SUBURBAN

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

    1971-1972 CHEVROLET CAPRICE

    • CC: 5031
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    2013 CHRYSLER 300

    • CC: 3604
    • Liter: 3.6
    • SubModel: S
    • CUI: 220
    • EngineType: V6 ( 3.6 L / 220 )

    1978-1980 OLDSMOBILE CUTLASS SALON

    • Liter: 5.0
    • SubModel: BROUGHAM
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 BUICK SKYLARK

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

    1973 CHEVROLET K10 SUBURBAN

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1976-1978 GMC JIMMY

    • Liter: 5.7
    • SubModel: HIGH SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 CHEVROLET C10 SUBURBAN

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

    1968 CHEVROLET CAMARO

    • Liter: 5.4
    • SubModel: RS
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1972 CHEVROLET CAPRICE

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1975 CHEVROLET CAMARO

    • Liter: 4.1
    • SubModel: RS
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    2011-2012 DODGE CHALLENGER

    • EngineType: ALL
    • SubModel: R/T

    1979 OLDSMOBILE CUTLASS SALON

    • EngineType: ALL
    • SubModel: HURST

    1978-1980 OLDSMOBILE CUTLASS CALAIS

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1973 GMC K15/K1500 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 PONTIAC FIREBIRD

    • Liter: 6.6
    • SubModel: FORMULA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    2013 DODGE CHALLENGER

    • CC: 5654
    • Liter: 5.7
    • SubModel: R/T
    • CUI: 345
    • EngineType: V8 ( 5.7 L / 345 )

    1977 BUICK SKYLARK

    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 BUICK SKYLARK

    • Liter: 5.0
    • SubModel: S
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1974 CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 CHEVROLET K10 SUBURBAN

    • CC: 7439
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC K15 SUBURBAN

    • Liter: 4.1
    • SubModel: HIGH SIERRA
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    2006-2007 DODGE CHARGER

    • CC: 3518
    • Liter: 3.5
    • SubModel: SE
    • CUI: 215
    • EngineType: V6 ( 3.5 L / 215 )

    1982 CHEVROLET C10 SUBURBAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1974 CHEVROLET CAMARO

    • EngineType: ALL
    • SubModel: Z28

    1973 CHEVROLET CAPRICE

    • CC: 5031
    • Liter: 5.0
    • SubModel: CLASSIC
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    2007-2009 DODGE CHARGER

    • CC: 2736
    • Liter: 2.7
    • SubModel: SE
    • CUI: 167
    • EngineType: V6 ( 2.7 L / 167 )

    1971-1972 CHEVROLET CAPRICE

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

    1978-1979 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K15 SUBURBAN

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2009-2010 DODGE CHALLENGER

    • Liter: 5.7
    • SubModel: R/T
    • CUI: 345
    • EngineType: V8 ( 5.7 L / 345 )

    2005-2012 CHRYSLER 300

    • EngineType: ALL
    • SubModel: LIMITED

    1976-1981 PONTIAC FIREBIRD

    • EngineType: ALL
    • SubModel: ALL

    1985-1987 OLDSMOBILE CUTLASS SALON

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1976 CHEVROLET C10 SUBURBAN

    • EngineType: ALL
    • SubModel: SCOTTSDALE

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    2005-2008 DODGE MAGNUM

    • EngineType: ALL
    • SubModel: SXT

    2009-2011 DODGE CHALLENGER

    • EngineType: ALL
    • SubModel: SE

    1974 GMC C15/C1500 SUBURBAN

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

    1973 CHEVROLET C10 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1987-1989 FORD BRONCO

    • Liter: 5.8
    • SubModel: CUSTOM
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1973 CHEVROLET CAMARO

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

    2013 CHRYSLER 300

    • EngineType: ALL
    • SubModel: BASE

    2011 CHRYSLER 300

    • EngineType: ALL
    • SubModel: BASE

    1979 CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 BUICK SKYLARK

    • Liter: 5.7
    • SubModel: SR
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982 CHEVROLET K10 SUBURBAN

    • EngineType: ALL
    • SubModel: SILVERADO

    1980 CHEVROLET K10 SUBURBAN

    • EngineType: ALL
    • SubModel: SILVERADO

    2006-2007 DODGE CHARGER

    • EngineType: ALL
    • SubModel: BASE

    1977-1978 GMC K15 SUBURBAN

    • Liter: 5.0
    • SubModel: SIERRA GRANDE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1987-1989 FORD BRONCO

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

    1977-1978 GMC C15 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1976 CHEVROLET C10 SUBURBAN

    • EngineType: ALL
    • SubModel: SILVERADO

    1973 CHEVROLET CAPRICE

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

    2005 DODGE MAGNUM

    • EngineType: ALL
    • SubModel: SXT SPECIAL EDITION

    1973 CHEVROLET CAMARO

    • CC: 5737
    • Liter: 5.7
    • SubModel: Z28
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1994 CHEVROLET CAPRICE

    • Liter: 5.7
    • SubModel: CLASSIC LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    2006-2010 DODGE CHARGER

    • CC: 3518
    • Liter: 3.5
    • SubModel: SXT
    • CUI: 215
    • EngineType: V6 ( 3.5 L / 215 )

    1966-1969 CHEVROLET CAPRICE

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: BROUGHAM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1992 FORD BRONCO

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

    1977 CHEVROLET K10 SUBURBAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1966-1967 CHEVROLET CAPRICE

    • CC: 4638
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1976 BUICK SKYLARK

    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976 CHEVROLET K5 BLAZER

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 CHEVROLET CAPRICE

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

    1975-1978 GMC K15 SUBURBAN

    • Liter: 5.7
    • SubModel: HIGH SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET CAMARO

    • Liter: 5.0
    • SubModel: LT
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1980-1981 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970 PONTIAC FIREBIRD

    • CC: 5733
    • Liter: 5.7
    • SubModel: FORMULA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981 OLDSMOBILE CUTLASS SUPREME

    • Liter: 5.7
    • SubModel: LS
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K15 SUBURBAN

    • Liter: 4.1
    • SubModel: SIERRA GRANDE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977-1978 GMC K15 SUBURBAN

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1991-1992 FORD BRONCO

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

    2012-2014 DODGE CHALLENGER

    • EngineType: ALL
    • SubModel: R/T CLASSIC

    1970-1974 PONTIAC FIREBIRD

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

    1979-1980 OLDSMOBILE CUTLASS SALON

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1980 CHEVROLET CAMARO

    • EngineType: ALL
    • SubModel: ALL

    1980 OLDSMOBILE CUTLASS

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987-1989 FORD BRONCO

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

    2013 DODGE CHALLENGER

    • CC: 3604
    • Liter: 3.6
    • SubModel: SXT
    • CUI: 220
    • EngineType: V6 ( 3.6 L / 220 )

    1974 GMC C15/C1500 SUBURBAN

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

    1977-1978 CHEVROLET C10 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1987-1989 FORD BRONCO

    • Liter: 5.8
    • SubModel: EDDIE BAUER
    • CUI: 351
    • EngineType: V8 ( 5.8 L / 351 )

    1982 CHEVROLET C10 SUBURBAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1968-1969 CHEVROLET CAMARO

    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1977-1978 CHEVROLET K5 BLAZER

    • Liter: 6.6
    • SubModel: CUSTOM DELUXE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1986 CHEVROLET C10 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1979 CHEVROLET K10 SUBURBAN

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

    1977 BUICK SKYLARK

    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 CHEVROLET CAMARO

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

    2006-2007 CHRYSLER 300

    • CC: 2736
    • Liter: 2.7
    • SubModel: BASE
    • CUI: 167
    • EngineType: V6 ( 2.7 L / 167 )

    1975 PONTIAC FIREBIRD

    • EngineType: ALL
    • SubModel: BASE

    1971-1974 PONTIAC FIREBIRD

    • EngineType: ALL
    • SubModel: FORMULA

    2013 CHRYSLER 300

    • EngineType: ALL
    • SubModel: TOURING

    1984 OLDSMOBILE CUTLASS CALAIS

    • EngineType: ALL
    • SubModel: HURST

    1976 CHEVROLET K5 BLAZER

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )
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