Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES

Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES

Flowmaster
FLO42543
12 In Stock
$153.62
$143.50
$153.62

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Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES

Flowmaster

Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES

$143.50 $153.62
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES
Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES

Flowmaster

Flowmaster 42543 2.5IN(O)/OUT(O) 40 SERIES

$143.50 $153.62
Description
40 Series™ Muffler; 2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
  • Durable Fully Welded 16ga Aluminized Steel
  • 3 Year Limited Warranty
  • Aggressive And Powerful Exterior Exhaust Tone
  • Notable Interior Resonance
  • No Internal Packing To Blowout
  • The Original Two Chamber Design
  • Premium Flowmaster Quality
  • Excellent Street/Strip And Off Road Application

Application Summary:

Year Make/Model
1973-1974 Chevrolet Blazer
1975-1980 Chevrolet C10
1988-1993 Chevrolet C1500
1975-1980 Chevrolet C20
1988-1993 Chevrolet C2500
1975-1980 Chevrolet C30
1967-1981 Chevrolet Camaro
1965-1968 Chevrolet Chevelle
1970 Chevrolet Chevelle
1975-1980 Chevrolet K10
1988-1993 Chevrolet K1500
1975-1980 Chevrolet K20
1988-1993 Chevrolet K2500
1977-1980 Chevrolet K30
1975-1981 Chevrolet K5 Blazer
2014 Dodge Challenger
1997-2010 Dodge Dakota
1997-2002 Ford Expedition
1997-2008 Ford F-150
2004 Ford F-150 Heritage
2005-2010 Ford Mustang
1988-1993 GMC C1500
1988-1993 GMC C2500
1975-1981 GMC Jimmy
1988-1993 GMC K1500
1988-1993 GMC K2500
1998-2002 Lincoln Navigator
1967-1981 Pontiac Firebird

Additional Information:

Video
Fitment
Year
Make
Model
Submodel
Engine
Notes
1978
Buick
Regal
Base
3.2L
2.50 Inlet 2.50 Outlet
1978 - 1979
Buick
Regal
Base
3.8L
2.50 Inlet 2.50 Outlet
1982
Buick
Regal
Base
4.1L
2.50 Inlet 2.50 Outlet
1980
Buick
Regal
Base
4.3L
2.50 Inlet 2.50 Outlet
1979
Buick
Regal
Base
4.9L
2.50 Inlet 2.50 Outlet
1978, 1986
Buick
Regal
Base
5.0L
2.50 Inlet 2.50 Outlet
1982
Buick
Regal
Estate Wagon
3.8L
2.50 Inlet 2.50 Outlet
1987
Buick
Regal
GNX
3.8L
2.50 Inlet 2.50 Outlet
1984
Buick
Regal
Grand National
3.8L
2.50 Inlet 2.50 Outlet
1978 - 1979
Buick
Regal
Limited
3.8L
2.50 Inlet 2.50 Outlet
1982
Buick
Regal
Limited Turbo
4.1L
2.50 Inlet 2.50 Outlet
1978
Buick
Regal
Sport
3.8L
2.50 Inlet 2.50 Outlet
1983
Buick
Regal
T-Type
3.8L
2.50 Inlet 2.50 Outlet
1973 - 1974
Chevrolet
Blazer
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
1973 - 1974
Chevrolet
Blazer
4.1L
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
1973 - 1974
Chevrolet
Blazer
4.8L
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
1973
Chevrolet
Blazer
5.0L
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
1973 - 1974
Chevrolet
Blazer
5.7L
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
1973 - 1974
Chevrolet
Blazer
7.4L
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
1973
Chevrolet
Blazer
Base
5.7L
2.50 Inlet 2.50 Outlet
1975 - 1980
Chevrolet
C10
2.5 in. Offset Inlet/Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Not Direct Fit-Some Adaptation Required
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Additional Information:

Video
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* EXTEND YOUR PRODUCTS MANUFACTURER WARRANTY

All products include a manufacturer warranty, but you can extend this warranty with JB's Purchase Protection Plan.
*Available on select products.