Flowmaster Street Mufflers 40 Series Original

 

 

40 Series Original-Street 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”. If you really want to hear your exhaust system – from both inside and outside of the vehicle, the 40 Series is for you. Available in either aluminized steel or 409S Stainless Steel and fully MIG welded for durability. 4″ Thick x 9.5″ Wide x 13″ Long with inlet/outlet sizes from 2.25″ up to 3″.

409S STAINLESS STEEL

Looking for the most aggressive sound in the Flowmaster muffler line?

Consider these stainless steel 40 series Flowmaster mufflers.

Constructed of 16-gauge 409S Stainless Steel and fully MIG-welded for maximum durability.

  • Durable Fully Welded 409 Stainless Steel
  • Aggressive And Powerful Exterior Exhaust Tone
  • Notable Interior Resonance
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout

For more power and less noise, then you’ve gotta get these Flowmaster Stainless Steel 40 Series mufflers.

P/N 8042441 (2.25 Offset IN / 2.25 Center OUT)

P/N 8042443 (2.25 Offset IN / 2.25 Offset OUT)

P/N 8042541 (2.50 Offset IN / 2.50 Center OUT)

P/N 8042543 (2.50 Offset IN / 2.50 Offset OUT)

P/N 80430402 (3.00 Center IN / 2.50 Dual OUT)

P/N 8043041 (3.00 Offset IN / 3.00 Center OUT)

P/N 8043043 (2.50 Offset IN / 2.50 Offset OUT)

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ALUMINIZED STEEL

P/N 42441 (2.25 Offset IN / 2.25 Center OUT)

P/N 42443 (2.25 Offset IN / 2.25 Offset OUT)

P/N 42541 (2.50 Offset IN / 2.50 Center OUT)

P/N 42543 (2.50 Offset IN / 2.50 Offset OUT)

P/N 430402 (3.00 Center IN / 2.50 Dual OUT)

P/N 43041 (3.00 Offset IN / 3.00 Center OUT)

P/N 43043 (3.00 Offset IN / 3.00 Offset OUT)

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