2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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Flowmaster Super 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 S503486
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$139.45
26 Reviews
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-10% $139.45 each Was $154.95
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- High-Quality 40 Series Muffler
- Intimidating, Deep Sound
- Low, Noticeable Interior Resonance
- Uses Data Flow Technology
- Horsepower and Torque Gains
- Improves Gas Mileage
- Built with Larger Case Profile
- 16 Gauge 409S Stainless Steel
- Fully MIG Welded
- Built in the USA
- Limited Lifetime Warranty
- Universal Fitment; Modifications Will Be Required
| Brand | Flowmaster |
| Muffler Inlet Size | 3.00 Inch |
Description
Upgrade Your Sound. Thanks to Flowmaster's 3.0 in. Super 40 Series Offset/Center Oval Muffler, you won't have to settle for your 1999-2025 GMC Sierra 1500's stock sound anymore. This muffler utilizes data flow technology to simultaneously give you a deep, intimidating exterior exhaust sound while minimizing interior resonance for a perfect ride all around.
Gas Mileage Improvement. This superior muffler also works to improve your truck's performance by boosting its horsepower and torque for a powerful drive on and off road. Also featuring gains in gas mileage, this muffler ensures your truck wins on the road and at the pump.
409S Stainless Steel. American-made for guaranteed quality, this muffler is constructed from high-strength 16-gauge 409S stainless steel, which is able to stand up to off road challenges easily. The muffler is also fully MIG-welded to give it an advanced durability for long-lasting use.
Warranty. This muffler comes with a limited lifetime warranty, which ensures you get the best materials and craftsmanship available.
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.
Application. Flowmaster's 3.0 in. Super 40 Series Offset/Center Oval Muffler perfectly fits all 1999-2025 GMC Sierra 1500s.
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Flowmaster 853046
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
4.8
Customer Reviews (26)
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