Flowmaster 953047 Super 40 Series Chambered Muffler

4.7 4.7 out of 5 stars | 853 ratings

Price: 116.03

Last update: 12-21-2024


About this item

Noticeable interior resonance
Excellent performance on high horsepower vehicles
Race proven Delta Flow technology
Deep Aggressive Sound Exhaust Note

Product information

Technical Details


Top reviews from the United States

  • madmike
    5.0 out of 5 stars Flowmaster; The best Muffler...
    Reviewed in the United States on June 29, 2024
    Been purchasing Magnaflows for my vehicles the past 20 years. Remembering my first set of Flowmasters on my 76 vette. You can't beat the sound. Received this the next day and went to my local muffler shop. Added a chrome tip to my shortbed Chevy and left with a big smileon my face.
  • Jason M. Bienko
    5.0 out of 5 stars My Silverado (Silvia) is happy now!
    Reviewed in the United States on March 24, 2015
    First off the shipping on this flowmaster was 2 days with free shipping. I was very impressed how fast I received it. As soon as it arrived I brought The Silverado (Silvia) in to get it installed. I called around and the cheapest I could find was 75 dollars. They do need to cut and add some extra pipe for the flowmaster to fit. Took them about 20 minutes and they fired up Silvia. Silvia sounded like the gates of hell opened up and she came out the door. He pulled up and said would you like the honors of the first rev? Damn right I did!! Silvia was perfect. The sound when first started is amazing really brings out the V8 power. At idle Silvia has a low purr. When you drive off you DO hear it in the cab but nothing to over powering. It's not loud enough to wake the neighbors. (Unless you wanted too) I did not want to have Silvia too loud and over power conversations in the cab or the radio. I park and sit in my truck de about 10 minutes before going into work so I didn't want Silvia to be too loud. The sound is perfect for what I was looking for. Between 20 and 30 MPH while driving regular (no bashing the gas) it does over power the cab a bit but once you get to the 45, 55 all up to 70 you have to bash the pedal a bit to make it loud. I'm my eyes, good price, perfect sound.
  • Sam
    5.0 out of 5 stars Sound
    Reviewed in the United States on June 13, 2024
    Sound is very deep, definitely will let people know you're there without being obnoxious.
  • Walter Topor
    5.0 out of 5 stars Sounds great!!
    Reviewed in the United States on March 21, 2024
    The media could not be loaded.
    Single in single out and easy installation.
    I’ve had it on for about 2 months now.
    Sounds a lot better in person.
  • Wm
    5.0 out of 5 stars Good buy
    Reviewed in the United States on February 10, 2024
    It was everything that I was expecting it to be. The sound is great I love it.
  • Ernie Lara
    4.0 out of 5 stars Performance at it's best
    Reviewed in the United States on June 26, 2013
    Did allot of research purchased for my 2001 Chevy 5.3 Tahoe and not a penny wasted. I do notice a 1 mpg improvement with the bonus of of a little bit more horse power. Moderate sound and happy with my choice with the super 40 delta flow. Recommend it to those wanting to add a a little flavor to their ride. Not annoying at all and one can hold conversations within the cab and also doesn't wake up the neighbors at night. You can't beat the delta flow technology that makes this muffler a moderate sound come to life without any annoying resonance within the cab full of family members (yes this is my daily driver) I also recommend to purchase the K & N air filter in place of the cheap restricted card board filters. K & N air filter cost me 37 $ here at amazon cheapest I have found brand new. Overall very happy with this super 40 flow master the whole family enjoys the ride and also the sound that this puppy purrs out. The K & N air filter added more responsiveness to pass vehicles on command and the super 40 muffler made the perfect combination for more horse power and cruising more efficiently. I now have to pay attention to my speedometer because before I know it with these added features I am easily doing 80 on up without really noticing it.
  • Jesee S.
    5.0 out of 5 stars Perfect sound for 01' Tahoe 5
    Reviewed in the United States on March 17, 2017
    Perfect sound for 01' Tahoe 5.3l. Not very loud at idle but when you get on it you can deffinatly tell its there! Only drone ib the cab is at 1850-2000rpm and it's not bad at all. I chose this because it's the wife's daily driver with the kids and I didn't want something too aggressive that it bugged her. She loves it and it's a perfect match for a daily driven family car looking for a nice sounding muffler. Although my Tahoe did have Single in and Dual out so the shop had to cut the Dual out pipe off to a single pipe so I could use this muffler. Not a big deal that's the work they do. This muffler was cheaper online than anywhere local I could find as well. Great buy and I would buy again in the futur for my other vehicles!
  • Emmaisen
    5.0 out of 5 stars Flowmaster super 40
    Reviewed in the United States on January 9, 2012
    I bought this for my 2004 Silverado 5.3 V-8. I was just putting on the new muffler and not changing the exhaust. The muffler was a 3" in and 3" out. The exhaust on my truck was 2 3/4". After $50 in added parts I was able to attach the muffler to my truck. it sounds awesome now. It really growls when hitting the gas. What is really nice is that it does pop or crackle. There is some resonance inside the truck, but its not overly annoying. It is a great product, just make sure you measure before you buy it, so you will be aware of the added cost of buying more parts in case it doesn't fit.

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