2020-2025
2015-2019
2007-2014
2001-2006
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Flowmaster 40 Series Delta Flow Offset/Center Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)Find parts that fit my vehicle
Item HG10186
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$139.45
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Product Information
Features, Description, Q&A, Specs & Installation
Features
- Oval Muffler
- Size: 2.50-Inch Inlet/2.50-Inch Outlet
- With a Rigorously Tested and Proven Performance
- Boasts a Corrosion- and Rust-Resistant Composition
- Fabricated with a Weather-Tight Structure
- Manufactured from Top-Notch 409 Stainless Steel Quality Material
- Made to Meet or Exceed Industry-Leading Quality and Safety Standards
- Serves as a Direct-Fit and Bolt-On Replacement Component
- Guaranteed to Deliver an Unparalleled and Long-Lasting Performance
- Developed through Innovative Technology
- Resistant Against Premature Wear and Tear
- Built with Strict Attention to Details
- Produced in a State-of-the-Art Facility
- Overlaid with a Black Finish/Coating
- Muffler Type: Chambered
- Intended for a Straightforward Installation Procedure
- Requires No Drilling, Modification, and or Cutting
- Universal Fit
Description
High-Performance Exhaust Component. The Oval Muffler is engineered to enhance your vehicle's exhaust system, offering improved performance and sound quality. Furthermore, with its chambered design and universal fit, it provides a versatile upgrade suitable for various applications.
Construction and Appearance. Manufactured from premium 409 stainless steel, this muffler boasts a corrosion- and rust-resistant composition for long-lasting durability. What's more? Its weather-tight structure and black finish/coating add a sleek appearance while ensuring reliable operation under harsh conditions.
Installation. Designed for a straightforward installation, this muffler serves as a direct-fit and bolt-on replacement. Additionally, it requires no drilling, cutting, or modifications, making it an easy and efficient upgrade to your vehicle.
Application. This Oval Muffler features a universal fit with a 2.50-inch inlet and 2.50-inch outlet, making it suitable for various vehicles and setups.
Flowmaster 842541
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) Oval Muffler
4.7
Reviews of Flowmaster Exhaust Products (500+)
Reviews of Flowmaster Exhaust products have an average rating of 4.7 out of 5
Jun 26, 2023
Review shared from Flowmaster Outlaw Dual Exhaust System with Polished Tips; Side/Rear Exit (20-25 6.6L Gas Sierra 2500 HD)
2022 AT4 - AJ3
2022 SIERRA 2500 AT4 6.6L GAS
If you have a GMC 2500 6.6l gas, and plan to do this on your own, it will take 3-4 hours if you do it alone. I wanted to remove the factory exhaust system as one piece, but doing this by yourself SUCKS. Ended up cutting the exhaust 2 feet back from the exhaust tip After 1.5hrs of trying to finagle the whole system out in 1 piece. ***Please note, you will need to knock out the factory studs from the flange after the cat, and use the new bolts supplied in the kit. a normal hammer will knock the factory studs out with a few good smacks.*** The install once the factory system is out it pretty straight forward. Pipes are a sung fit and take some wiggling to get them together, which is a good thing. This is definitely a loud system. Expect very loud cold starts if you have neighbors who complain.
Mar 16, 2025
Review shared from Flowmaster FlowFX Single Exhaust System with Black Tip; Side Exit (14-24 6.4L RAM 2500)
2016 Tradesman -
Overall pretty good
The exhaust was pretty easy to install pieces slide right together the hard part is actually removing the old exhaust it sound good not overly loud but has a good noise on startup and when you get on it
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 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 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 7, 2025
Review shared from Flowmaster American Thunder Dual Exhaust System with Polished Tips; Rear Exit (09-18 5.7L RAM 1500 w/ Factory Dual Exhaust)
2017 Big Horn -
AWESOME!
These pipes are perfect. Took them to the muffler shop and they had them installed in 30 minutes. They are not too loud inside the cab. But they are perfect outside the cab. Just loud enough and sound awesome.
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 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 5, 2025
Review shared from Flowmaster Outlaw Dual Exhaust System with Black Tips; Side/Rear Exit (19-24 5.7L RAM 1500)
2020 Rebel - Kaiceps88
Definitely not direct fitment
cutting is involved if you buy this exhaust system. It sounds good, but a direct fitment should require zero cutting hopefully I can recoup money I lost on install on wheels.Besides that it's a great system more power and the truck feels alive now.
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
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