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    • (19 reviews)
      # sp4412
      Quiet-Flow Muffler by Walker®. Together with delivering OE-style sound, the Quiet-Flow Muffler features 100% steel construction for maximum durability. This part is a perfect choice if you are looking for proper OE-quality...
      $29.28 - $654.91
    • (14 reviews)
      # sp4416
      SoundFX™ Direct Fit Muffler by Walker®. This muffler is the right choice if you opt for quality acoustics and performance. Walker offers 100% aluminized steel SoundFX Mufflers with direct fit and universal fit options available,...
      $25.89 - $125.19
    • (5 reviews)
      # sp4418
      SoundFX Universal Muffler Fit by Walker®. This muffler is the right choice if you opt for quality acoustics and performance. Walker offers 100% aluminized steel SoundFX Mufflers with direct fit and universal fit options available,...
      Designed to deliver ultimate performance and pleasing sound qualityMay require a few modifications to install
      $24.06 - $32.61
    • (23 reviews)
      # sp4420
      Resonator by Walker®. If you want exhaust piping that delivers precise OE-style fit, appearance, and reliability, this part is your number one choice. Every pipe is vehicle-specific and is manufactured using precision benders to...
      $26.93 - $315.55
    • (0 reviews)
      # sp4422
      Tru-Fit Universal Muffler by Walker®. The Tru-Fit Universal Muffler is designed to provide installers and DIY users with optimum performance and quality acoustics at an affordable price. This 100% aluminized steel muffler features...
      $2.79 - $34.68
    • (0 reviews)
      # sp7144
      Heavy Duty Muffler by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories,...
      Makes installation quick and easyAn economical replacement for OE components
      $56.19 - $213.25
    • (12 reviews)
      # sp4410
      Exhaust Hanger by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker accessories, you...
      $1.32 - $48.20
    • (12 reviews)
      # sp4411
      Exhaust Rubber Insulator by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you choose Walker...
      $1.32 - $48.20
    • (0 reviews)
      # sp6936
      Exhaust Hanger by Dorman®. Dorman’s Exhaust Hanger installs easily to mount the exhaust to the vehicle. The Hanger is constructed from high-quality, heat-resistant materials for long-lasting durability.
      Direct replacement for a proper fitReplacement restores the exhaust to proper operation
      $8.26 - $36.75
    • (0 reviews)
      # sp13162
      This superior product was carefully designed with key attention to detail and manufactured from high-grade materials to the strict standards of the highest quality. This AP Exhaust Technologies product ensures superior durability as...
      Made from first-rate materialsEnsures outstanding durability
      $2.04 - $28.02
    • (0 reviews)
      # sp3649
      Monster™ Stainless Steel Mufler by Banks®. Get increased power and torque from reduced backpressure with this straight-through muffler. With its straight-through, massive 4” core, this muffler presents essentially no...
      $116.99 - $386.84
    • (0 reviews)
      # sp20700
      Competition™ Turbo Muffler by Hooker®. Muffler Series: Competition™. Inlet Diameter: 2.25". Outlet Diameter: 2.25". Muffler Body Height: 4.25". Muffler Body Width: 9.75". Muffler Body Length: 14". Oval Shaped Double Wrapped...
      Improved Engine Efficiency Results in Better Performance and Economy4-1/4"H x 9-3/4"W x 14"L Oval Shaped Double Wrapped Aluminized Steel Construction for Longer Life
      $40.55
    • (0 reviews)
      # sp20701
      Maximum Flow Muffler by Hooker®. Inlet Diameter: 2.25". Outlet Diameter: 2.25". Muffler Configuration: Offset - Center. Muffler Body Height: 4.75". Muffler Body Width: 10.25". Muffler Body Length: 14". Bi-Directional Turbo Style....
      Reinforced Inlets and OutletsStainless Steel Perforated Plate eliminates Internal Rust
      $77.09
    • (1 review)
      # sp4400
      Race Series Bullet Muffler by DynoMax®. This dyno tested and track proven muffler features unrestricted, straight-through design for maximum horsepower and CRF Technology for sound reduction. Its 100% welded construction ensures...
      Unrestricted, straight-through design for a dyno tested and track proven increase in horsepower and torqueEngineered to provide a deep race sound
      $20.03 - $75.78
    • (4 reviews)
      # sp4401
      Super Turbo™ Muffler by DynoMax®. Get improved exhaust flow and reduced back pressure for better performance, and a mellow tone without annoying interior resonance, with this Super Turbo Muffler. Its patented flow directors and...
      Constructed to increase horsepower and torque thanks to improved exhaust flowAluminized steel Super Turbo muffler maintains a mellow performance tone
      $48.86 - $152.61




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    The GMC muffler consists of metal plates and tubes with multiple holes in them. Between the tubes, there are chambers that cancel out the unwanted frequencies and suppress the annoying noise. Once the sound waves and exhaust gases move into the muffler through the center tube, they bounce off the back wall of the unit and then come back out into the main body. That creates waves that have the opposite amplitude, which makes them cancel each other out.

    The chamber where the process of wave collision occurs is called the resonator. Its size is precisely calculated so that the process runs smoothly. The principle that the device works on is pretty simple. When the high-pressure sound wave that is coming out from the first chamber meets the reflected low-pressure wave, they cancel each other out because the two waves add up to zero. That's the way the muffler reduces that tremendous amount of noise produced by the engine.

    Another important characteristic of the muffler is that its body is constructed in three layers: two thin metal layers with a thicker insulated layer between them. Such a structure allows the unit to absorb some of the pressure pulses. The muffler itself is manufactured from sturdy materials such as stainless steel and aluminum-coated steel. That ensures the part to function for a long period of time. And the better your muffler operates, the greater performance your vehicle offers.

    GMC Mufflers & Resonators Reviews

    Average rating:  5  5 - 5 reviews
    4.8 of 5
    Good Job Was Done
    The Muffler hanger was an exact fit for my Blazer muffler. The previous completely rusted. Fitted perfectly, lasted for long, good produced product for extremely low price. It was shipped as flashy as possible.
    PPosted by Paul R (Nashville, TN) /
    2004 Chevy Blazer
    Was this review helpful for you? Yes
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