2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 3 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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Flowmaster Super 40 Series Center/Offset Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)Find parts that fit my vehicle
Item S104213
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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7 Reviews
Our Price
$140.65 each
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Super 40 Series Center/Offset Oval Muffler
- Delta Flow Technology
- Deep Aggressive Sound
- 3 in. Diameter Inlet - Center Position
- 3 in. Diameter Outlet - Offset Position
- 5 in. x 10 in.
- 16 Gauge Aluminized Steel Construction
- Fully MIG Welded
- 3-Year Limited Warranty
- Universal Fitment; Modifications Will Be Required
| Brand | Flowmaster |
| Muffler Inlet Size | 3.00 Inch |
Description
Aggressive Performance - Aggressive Sound. The larger case profile and Delta Flow technology of the Flowmaster Super 40 Series Center/Offset Oval Muffler - 3.0 in. provides your 1999-2025 Silverado 1500 with the best worlds of high performance and a satisfying roar that lets the world know you're coming. On the inside, the finely tuned resonance sounds that reach the cockpit let you listen to hours of your favorite racing tunes, uncompromised by engine sounds.
Robust Construction. The Flowmaster Super 40 oval muffler is manufactured from aluminized 16 gauge steel. Hot dip coating with a silicon-aluminum alloy assures a strong metallurgical bond between the steel and the aluminum coating for corrosion resistance. MIG welding assures durability.
Dimensions. The Flowmaster Super 40 Series muffler is 13.5 x 10 inches long with a 3 in. diameter center inlet and a 3 in. diameter offset outlet.
Modifications Required. This Muffler was designed to be used on mutliple applications, as it is not a direct fit replacement part. In order to install this Muffler properly on your vehicle, some modifications to the exhaust system will be required.
Warranty. Flowmaster protects its Super 40 Series center/offset aluminized steel oval muffler with a 3-year limited warranty against defects in materials and workmanship.
Application. The Flowmaster Super 40 Series Center/Offset Oval Muffler - 3.0 in. fits all models of 1999-2025 Chevy Silverado 1500.
Robust Construction. The Flowmaster Super 40 oval muffler is manufactured from aluminized 16 gauge steel. Hot dip coating with a silicon-aluminum alloy assures a strong metallurgical bond between the steel and the aluminum coating for corrosion resistance. MIG welding assures durability.
Dimensions. The Flowmaster Super 40 Series muffler is 13.5 x 10 inches long with a 3 in. diameter center inlet and a 3 in. diameter offset outlet.
Modifications Required. This Muffler was designed to be used on mutliple applications, as it is not a direct fit replacement part. In order to install this Muffler properly on your vehicle, some modifications to the exhaust system will be required.
Warranty. Flowmaster protects its Super 40 Series center/offset aluminized steel oval muffler with a 3-year limited warranty against defects in materials and workmanship.
Application. The Flowmaster Super 40 Series Center/Offset Oval Muffler - 3.0 in. fits all models of 1999-2025 Chevy Silverado 1500.
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Flowmaster 953047
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Muffler
4.9
Customer Reviews (7)
Review Summary
Installation Time: Afternoon
Oct 5, 2022
2019 LT - DerekRS
Installation Time: Afternoon
19 Silverado 1500
Will need to get adapter for welding since stock exhaust is 2.75” on the Custom LT model. So if you get a 3” ID to a 3” OD exhaust pipe adapter it will slip over the stock pipe and into the muffler for easy welding. Overall good muffler, louder than stock but quieter and no popping than a straight muffler delete.
Fit & Finish 5/5
Loudness (Volume) 3/5
Exhaust Note 3/5
Bang For Your Buck 5/5
Jan 27, 2020
2016 LT - tvg138
Installation Time: Afternoon
Best in assisting throttle response
You will need to weld, unless you have bolt on clamps. This super 40 sounds low and aggressive, but not to the point of being pulled over. Changing out the OE muffler for the super 40 will increase and improve your electronic throttle response. I can mash the gas pedal and actually feel my V8 now. Must buy for the price and the reward!
Dec 24, 2019
2008 LT - JeannaN
Installation Time: Less than 1 Hour
Muffler
Adds a nice low toned rumble to my 4.8 no drone noise when going highway speeds
Jan 22, 2019
Review shared from Flowmaster Super 40 Series Center/Offset Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
2009 LT - DaltonM
Installation Time: Less than 1 Hour
Flowmaster Exhaust
This product is great.. sounds awesome and installs easy! Love it
Mar 17, 2022
Review shared from Flowmaster Super 40 Series Center/Offset Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
Dom98
Installation Time: Less than 1 Hour
Flowmaster 2011 Chevy Silverado
Did not disappoint change the whole dynamic of the truck definitely recommended!
Fit & Finish 5/5
Loudness (Volume) 4/5
Exhaust Note 4/5
Bang For Your Buck 5/5
Feb 21, 2022
Review shared from Flowmaster Super 40 Series Center/Offset Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)
DianaOrtegaRome
Installation Time: Afternoon
Flowmaster super 40 series
I love it, it’s loud and sounds amazing on the highway!
Fit & Finish 5/5
Loudness (Volume) 5/5
Exhaust Note 5/5
Bang For Your Buck 5/5
Apr 20, 2021
Review shared from Flowmaster Super 40 Series Center/Offset Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)
2019 Laramie - TimothyT
Installation Time: Less than 1 Hour
Good quality and sound
I love this muffler for my 2019 Ram 1500 Laramie, it makes it sound like an actual truck compared to how it sounded before ??
Fit & Finish 5/5
Loudness (Volume) 3/5
Exhaust Note 3/5
Bang For Your Buck 5/5
Reviews of Flowmaster Exhaust products have an average rating of 4.7 out of 5
Mar 27, 2025
Review shared from Flowmaster FlowFX Center/Center Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)
2020 LTZ -
Flow master flowX
Like it moderate sound people like it om the road friends says want it
Mar 23, 2025
Review shared from Flowmaster American Thunder Dual Exhaust System with Quad Black Tips; Rear Exit (19-23 5.3L Silverado w/ Factory Dual Exhaust)
2021 -
American Thunder well said.
No disappointment, flow master came thru time after time, as long as this product has been around. Always delivering a great sound.
Mar 21, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System; Side/Rear Exit (14-18 5.3L Sierra 1500)
2017 LT -
sounds great
install was pretty easy been on for about 2 years now I believe with no issues
Mar 15, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System; Side/Rear Exit (14-18 5.3L Silverado 1500)
2017 LT -
Great sound
The exhaust sounds fantastic but the clamps on the exhaust tips snapped when I tried to install them. I had access to a lift and was very easy to install
Mar 8, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System; Side/Rear Exit (14-18 5.3L Silverado 1500)
2016 LT -
Well worth it! Awesome!!
I absolutely love this exhaust. Super easy install the only thing that took me extra time was having to buy a new clamp for the connection at the cat. Other than that this thing has exceeded my expectations! Sounds aggressive!
Mar 6, 2025
Review shared from Flowmaster Outlaw Series Center/Center Race Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)
2006 LT -
Sounds Amazing
Truck sounds amazing . Installed on stock exhaust so had to modify some minor items on truck.
Mar 4, 2025
Review shared from Flowmaster Original 40 Series Center/Dual Out Oval Muffler; 3-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
2006 -
Flowmaster original 40 series
Excellent muffler !! These mufflers sound great day one, not obnoxiously loud but good deep tone . When I buy another V8 vehicle I will put flowmaster mufflers on it.I have been using the 40 series for years and you can’t beat the quality of them
Mar 4, 2025
Review shared from Flowmaster Original 40 Series Center/Dual Out Oval Muffler; 3-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
2015 LT -
Fantastic Upgrade – Should’ve Done This Sooner!
This exhaust system is a great addition to my truck—I only wish I had made the upgrade years ago! The sound is perfect—not too loud, not too quiet—just the right balance. Cabin noise while driving or idling is minimal, making for a comfortable ride. I’ve also noticed a nice boost in performance, with smoother acceleration. Plus, my fuel efficiency has improved on my daily commute. Overall, an excellent investment that enhances both sound and performance!
Mar 3, 2025
Review shared from Flowmaster Outlaw Extreme Single Exhaust System; Turn Down (14-18 5.3L Silverado 1500)
2017 -
Sounds great
Sounds great only problem was it was not as easy as just slipping it on. It was too short and the pipe was bigger than my stock exhaust but got it on ended up having to weld it on to make it long enough.
Feb 28, 2025
Review shared from Flowmaster FlowFX Single Exhaust System with Black Tip; Side Exit (11-18 6.2L Silverado 1500)
2015 LTZ - Atuzzo104
Fantastic setup for a great price
After doing a lot of research online and multiple trips to the local muffler shop, I went with the flowmaster FX kit and couldn't be happier. Hardest part of the install was getting the old rusty clamps and hangers loose. Once the old one was off installing the new kit was a breeze, took less than 20 minutes. Truck sounds great with very little drone in the cabin. With the 8-Speed there are certain RPM's that the sound gets a little harsh but it's only for a split second. As of right now I even have AFM (4 Cylinder) enabled and it doesn't drone what so ever. Deep tone at startup, good deep note when accelerating, and mellows right off to nearly nothing when cruising. Truck sounds like a V8 now.
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