2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Guaranteed 12/24 Delivery Still Available see item page for details! available on most items - Details
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Flowmaster 70 Series Center/Offset Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)Find parts that fit my vehicle
Item S503473
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$199.76
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-10% $199.76 each Was $221.95
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- Delta Flow Technology
- 3-Inch Diameter
- Mild Exhaust Tone
- Minimal Interior Resonance
- Improves Horsepower and Fuel Efficiency
- Limited Lifetime Warranty
- Universal Fitment; Modifications Will Be Required
| Brand | Flowmaster |
| Muffler Inlet Size | 3.00 Inch |
Description
Flowing Out. Looking for a mild exhaust upgrade, but don’t want to replace the exhaust? The Flowmaster 70 Series 3-Inch Center/Offset Oval Muffler can do the trick. This muffler is a great replacement for your stock Sierra muffler as it uses Flowmaster’s patented Delta Flow Technology to improve your truck’s horsepower and fuel efficiency.
Mild Exhaust Tone. The Flowmaster 70 Series Oval Muffler is constructed of aluminized steel and has a 3-inch diameter. While the outlet is wide, the muffler produces a mild exhaust tone that is quiet both inside the cabin and out. Some welding and cutting is required to install the muffler, as it is not a direct bolt-on fit.
Warranty Information. The Flowmaster Oval Muffler includes a limited lifetime warranty. Please check the manufacturer’s site for details.
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. The Flowmaster 70 Series 3-Inch Center/Offset Oval Muffler fits all 1999-2025 GMC Sierra 1500 models.
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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
Questions & Answers
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