Flowmaster Super 40 Series Offset/Same Side Out Oval Muffler; 3-Inch Inlet/3-Inch Outlet (Universal; Some Adaptation May Be Required)

Set Yourself Apart. Part of the fun of modifying your Sierra 1500 is to give it a personality all its own. Part of that personality should be its "voice". Give your Sierra 1500 an aggressive voice and personality by installing the Flowmaster Super 40 Series Offset/Same Side Out Oval Muffler with 3.0 in. tubing. The Super 40 Series gives your Sierra 1500 an aggressive outside-the-cabin sound while keeping things calm inside. This means you can make a statement but keep the drivability of your rig whether you are commuting, or taking it out on a long road trip.

Industry-Leading Construction. The Super 40 Series from Flowmaster is a chambered exhaust that features Flowmaster's Delta Flow Technology. It is made with 16-gauge aluminized steel that is MIG welded at all the seams and finished in a corrosion-resistant black.

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.

3-Year Warranty. This Super 40 Series muffler is covered under Flowmaster's 3-year warranty. For additional information and terms contact your authorized Flowmaster dealer or Flowmaster directly.

Application. The Flowmaster Super 40 Series Offset/Same Side Out Oval Muffler - 3.0 in. fits 1999-2026 GMC Sierra 1500 models.

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