B & B Muffler

Flowmaster Original 40 Series Mufflers


 

Flowmaster Standard 40 Series Mufflers

The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers a powerful “Flowmaster Sound” you’ve heard so much about it. If you really want to hear your exhaust system and that great muscle car tone – from both inside and out of the vehicle – the 40 Series is for you.

 

Application Reccomendations:

  • The original high performance Flowmaster muffler
  • Aggressive sound for the enthusiast you likes their exhaust LOUD
  • Available in either aluminized steel or 409S Stainless
  • Stainless steel mufflers covered by limited lifetime warranty
  • Fully MIG welded for durability
Description Part No. List
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Details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 2.25"
Outlet Diameter: 2.25"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

42441 $150.33 42441 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 2.25"
Outlet Diameter: 2.25"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

42443 $150.33 42443 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 2"
Outlet Diameter: 2"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

425404 $120.55 425404 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

42541 $150.33 42541 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

42543 $150.33 42543 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 2"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

430402 $150.33 430402 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

43041 $150.33 43041 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

43043 $150.33 43043 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 2.25"
Outlet Diameter: 2.25"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

8042441 $174.95 8042441 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 2.25"
Outlet Diameter: 2.25"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

8042443 $174.95 8042443 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

8042541 $174.95 8042541 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 2.50"
Outlet Diameter: 2.50"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

8042543 $174.95 8042543 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 3"
Outlet Diameter: 2"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

80430402 $174.95 80430402 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

8043041 $174.95 8043041 FLOWMASTER 40 SERIES
details
FLOWMASTER ORIGINAL 40 SERIES MUFFLER STAINLESS STEEL

Inlet Diameter: 3"
Outlet Diameter: 3"
Diameter: 4"
OAL: 19"
Case Length: 13"
Width: 9.75"
Height: 5"
Weight: 12

8043043 $174.95 8043043 FLOWMASTER 40 SERIES
details

 

 

 

 

 





 

 
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