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Magnaflow 3.50-Inch Round Glasspack Performance Muffler; 2-Inch Inlet /2-Inch Outlet (Universal; Some Adaptation May Be Required)

Item HG2946
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FREE Shipping on orders over $119 Market Price $59.99 You Save 13% ($7.99) Up to 10% off for Military & First Responders! See Details

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Ship to: Ashburn - 20149
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Total cost of service $249.00
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • High-Performance Replacement Muffler
      • Straight-Through Design
      • Single-Layer Packing
      • Aggressive Exhaust Note
      • 2-Inch Inlet and Outlet
      • 3.50-Inch Chamber Diameter
      • Red Coating
      • Requires Welding for Installation
      • Limited 90-Day Warranty
      • Fits 2020-2024 GMC Sierra 2500s


      Unleash Your Sierra's Missing Growl. If you're looking to squeeze some more noise out of your Sierra, consider swapping the muffler with a performance-inspired replacement, such as this Magnaflow 3.50-Inch Round Glasspack Performance Muffler. This muffler features a classic glasspack design with straight-through routing and minimal packing, producing a deep, aggressive growl fit for a heavy-duty pickup. 

      Enhanced Performance. With its straight-through design, this muffler cuts down on the backpressure of the factory exhaust system and increases flow. As a result, you’ll enjoy more power and better fuel economy. 

      Classic Appearance. The Magnaflow Glasspack is a blast from the past, featuring the classic glasspack styling popularized by hot-rodders in the 60s and 70s. This muffler features a long and narrow form factor and bright red corrosion-resistant coating, guarding the underlying alloy against rust and oxidation. 

      Warranty. A limited 90-day warranty covers this product against manufacturing defects. 

      Application. This Magnaflow 3.50-Inch Round Glasspack Performance Muffler fits all 2020-2024 GMC Sierra 2500s.

      Magnaflow 13134

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Glasspack Muffler

      Customer Reviews (3)

        Brand Image

        Reviews of Magnaflow Exhaust products have an average rating of 4.6 out of 5

          Questions & Answers

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