2021-2025
2015-2020
2009-2014
2004-2008
1997-2003
Installation Time
(approx) 20 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Flowmaster 40 Series Offset/Center Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)Find parts that fit my vehicle
Item T586997
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$104.95 each
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- Offset/Center Oval Muffler
- Aggressive Loud Sound
- Chambered Muffler Structure
- Inlet Diameter of 3-Inch
- Outlet Diameter of 3-Inch
- Muffler Body Height of 4-Inch
- Pipe Connection Type
- Muffler Body Width of 9.75-Inch
- Oval Body Shape
- Muffler Body Length of 13-Inch
- Muffler Overall Length of 19-Inch
- Fully MIG Welded
- Made from 16-Gauge Aluminized Steel
- Easy Installation
- Universal Fitment
| Brand | Flowmaster |
| Muffler Inlet Size | 3.00 Inch |
Description
Signature Sound. Enhance your exhaust sound with the Flowmaster 40 Series Offset/Center Oval Muffler with a 3-Inch Inlet and 3-Inch Outlet. This iconic muffler is designed for those who crave a deep and aggressive exhaust note, along with improved performance for their vehicle. It produces a powerful, deep, and aggressive exhaust note that turns heads wherever you go.
Performance Boost. Beyond the captivating sound, this muffler enhances your vehicle's performance. It reduces exhaust restriction, allowing your engine to breathe better and potentially unlocking more horsepower and torque. The oval shape and offset/center configuration of this muffler not only provide exceptional performance but also add a touch of style to your exhaust system.
Installation. This product is easy to install and should take only a few moments.
Application. The Flowmaster 40 Series Offset/Center Oval Muffler; 3-Inch Inlet/3-Inch Outlet is a product with universal fitment with some adaptation needed.
Flowmaster 43041
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
4.7
Reviews of Flowmaster Exhaust Products (500+)
Reviews of Flowmaster Exhaust products have an average rating of 4.7 out of 5
Mar 24, 2025
Review shared from Flowmaster FlowFX Direct-Fit Muffler (21-25 3.5L EcoBoost F-150 w/ Factory Dual Exhaust, Excluding Raptor)
2025 -
flowmaster muffler fitment
-nice fix good looking could be a touch louder all my budies like.
Mar 23, 2025
Review shared from Flowmaster Super 44 Series Offset/Offset Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)
2017 Lariat -
Flowmaster
Sounds good really like the deep tone it gives drone isn’t to bad in the cab with resonator on
Mar 20, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System with Black Tips; Rear Exit (21-25 3.5L EcoBoost F-150 w/ Factory Dual Exhaust, Excluding Raptor)
2022 XLT -
Nice if you like it loud
There is drone but I don't mind and was expecting it , overall pretty good very easy to install.
Mar 9, 2025
Review shared from Flowmaster Super 10 Series Center/Center Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
2011 XLT -
Good product
I put this on my 2011 f150 5.0 coyote. It’s a great sounding muffler. Not too loud when you leave everything else on and just replace the muffler
Mar 6, 2025
Review shared from Flowmaster Signature Series Single Exhaust System with Black Chrome Tip; Side Exit (15-20 5.0L F-150)
2018 Platinum -
Awesome Flowmaster Sound
I got this bada$$ exhaust on a 30% off sale, so couldn't pass it up. I absolutely love the throaty sound it produces from the coyote 5.0. It doesn't have the raspy glasspack sound, which I'm happy about. The Black Chrome tip looks very nice on my Black Platinum.
Mar 4, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System; Side/Rear Exit (04-08 5.4L F-150)
2007 XLT -
2007 Ford F-150
Easy install, took a few hours but all fit together perfectly, and was completely worth the deep aggressive tone. Completely recommended exhaust
Mar 3, 2025
Review shared from Flowmaster Outlaw Direct-Fit Muffler (23-25 5.0L F-150 w/ Factory Dual Exhaust)
2025 Tremor - FordCLC
Flow master Exhaust
The Flow Master Outlaw Exhaust Adds a great sound and you can feel the extra horsepower in the 5.0 v8. I’m Extremely impressed with the performance of this Exhaust.
Mar 1, 2025
Review shared from Flowmaster FlowFX Direct-Fit Muffler (23-25 5.0L F-150 w/ Factory Dual Exhaust)
2024 STX -
A bit short
Great sound made well but the two rear pipes are a bit short and the factory rear tailpipes don’t go all the way in, also they are a very tight fit had to use a rubber mallet to get them in. Sounds is perfect not to loud but has a nice roar.
Feb 21, 2025
Review shared from Flowmaster Outlaw Extreme Single Exhaust System with Black Tip; Turn Down (11-14 5.0L F-150)
2012 - Serb
Mean sound
Sounds great. Clip was to small but ended up welding it on
Feb 18, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System with Black Tips; Side/Rear Exit (15-20 2.7L EcoBoost F-150)
2017 XLT - Aidan2549
Loud and proud.
Great exhaust kit. The sound is loud and the performance is noticeable.
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