GMC Sierra 2500 Mufflers
This page brings together mufflers for the GMC Sierra 2500, covering model years 1999–2011. The range includes individual exhaust mufflers and complete exhaust muffler assemblies in styles such as direct-fit OE replacement, chambered, and straight-through designs, finished in aluminized or stainless steel. Choose your model year above and this page keeps only the mufflers that fit your GMC Sierra 2500. Each listing is matched to our vehicle fitment data before it appears here.
Magnaflow 13288 Multi-Chamber Performance Muffler 3in Center/Dual 2.5in Outlet
MagnaFlow 14221 Oval Straight-Through Performance Exhaust Muffler 3in. Center / 2.5in. Dual 5x8x14in.
What's here for your GMC Sierra 2500
- Exhaust mufflers — including direct-fit, performance, chambered, straight-through, and dual-outlet designs in aluminized and stainless steel
- Exhaust muffler assemblies — complete bolt-on units for straightforward replacement, available in OE-style and universal configurations
- Resonators and resonator-style options within the muffler range
The widest selection here comes from Walker Exhaust, AP Exhaust, Magnaflow, and Flowmaster, covering the full span of 1999–2011 GMC Sierra 2500 fitments across both individual mufflers and full assemblies. Other categories GMC Sierra 2500 owners shop for: GMC Sierra 2500 Exterior Lights, GMC Sierra 2500 Doors and Door Parts and GMC Sierra 2500 Body and Paint Equipment, or browse all GMC Sierra 2500 parts and accessories.