Compare Prices for Flowmaster 42443 40 Series Muffler - 2.25 Offset IN / 2.25 Offset OUT - Aggressive Sound

Flowmaster 42443 40 Series Muffler - 2.25 Offset IN / 2.25 Offset OUT - Aggressive SoundBuy Flowmaster 42443 40 Series Muffler - 2.25 Offset IN / 2.25 Offset OUT - Aggressive Sound

Flowmaster 42443 40 Series Muffler - 2.25 Offset IN / 2.25 Offset OUT - Aggressive Sound Product Description:



  • Durable fully welded 16 gauge alumInized steel
  • Aggressive and powerful exterior exhaust tone
  • Notable Interior resonance
  • Excellent street, strip and off road application
  • No Internal packIng to blowOut

Product Description

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 for you. Constructed of 16 gauge alumInized steel and fully MIG welded for maximum durability.

Customer Reviews

Most helpful customer reviews

4 of 4 people found the following review helpful.
5No more waiting to exhale!
By ToplessGT
I bought a pair of Flowmasters 42443 I/O mufflers for my 2003 Ford Mustang GT Convertible, and let me tell ya it's freakin awesome! It totally gave my car a meaner, louder, more aggressive sound. I recommend this to any mustang enthusiast looking for the same. The price was also unbeatable compared to the $250 price tag at local muffler shops.

2 of 2 people found the following review helpful.
5Nice upgrade from stock mufflers.
By MrWhistles
I bought a pair of these for my 2001 Mustang GT. I wanted to wake my Mustang up a bit but not go crazy. Don't be fooled by the videos on youtube that make these sounds quiet and raspy, these mufflers sound amazing welded in to the stock exhaust system. These are the same length as the stock mufflers with the correct offset/diameter outlets.

2 of 2 people found the following review helpful.
5Amazing for any car!
By B. Wright
I installed this on my 1996 Honda Accord LX, It has the perfect tone. It has a nice deep tone, whenever I step on the gas the floor shakes. I love it! It's not a fart can, not a hair dryer. PERFECT tone. Great build quality as well, and I've noticed a slight performance gain, as well as a gas mileage increase. I had a stock muffler with a rust hole in it, so this is a huge upgrade! Highly recommend!

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Buy Flowmaster 42443 40 Series Muffler - 2.25 Offset IN / 2.25 Offset OUT - Aggressive Sound