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    • (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...
      Economical performance and acousticsUniversal fit allows for greater installation flexibility
      $31.31 - $34.68
    • (21 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...
      Designed for OE equivalent sound and precision fitSpun-locked heads for a proper resistance to backfire
      $29.28 - $654.91
    • (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 - $232.70
    • (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
      $32.14 - $49.07
    • (15 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,...
      Designed to deliver ultimate performance and pleasing sound qualityOE-equivalent direct-fit design
      $27.04 - $125.19
    • (0 reviews)
      # sp4612
      Universal Muffler by Bosal®. This product is engineered to meet OE specs to ensure precise, factory-like fit, maximum performance, and reliability. This part features a direct fit design allowing for ease of installation....
      Made of High Quality materialsPrecision-manufactured for easy fitment
      $37.41 - $112.50
    • (26 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...
      Designed to directly replace the factory partMade with precision benders and fixture checked
      $26.93 - $324.53
    • (0 reviews)
      # sp26988
      Trucks Mufflers by Walker®. Walker offers a compltete line-up of exhaust products for todays medium-duty, heavy-duty and comercials vehicles. With their extensive selection of accessories and hardware for the exhaust system, Walker...
      Makes installation quick and easyOptimal OE-style fit and quality
      $59.04 - $466.09
    • (0 reviews)
      # sp22595
      Muffler Replacement Kit by Magnaflow®. Magnaflow D-FIT kits replace the restrictive factory muffler, while maintaining the OEM piping & tailpipe. The straight through design muffler or muffler delete reduce backpressure creating...
      409 Stainless Steel ConstructionMandrel Bent Stainless Steel Tubing
      $261.92 - $376.16
    • (0 reviews)
      # sp41878
      Muffler Delete Pipe by MBRP®. Let it all hang out and bypass the muffler entirely on your diesel truck. This 4” T409 stainless steel pipe fits directly into place in your exhaust system and replaces your muffler. Yes, it’s loud.
      Swaged to slip-fit mating pipe perfectlyAttaches with muffler clamps
      $39.99 - $124.99
    • (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...
      Reduces Back-pressure and Increases Exhaust Flow4" straight-through design
      $123.87 - $409.59
    • (1 review)
      # sp13641
      304 SS Muffler Kit by Stainless Works®. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to corrosion. Engineered with careful attention to the smallest detail using...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
      $175.50 - $486.00
    • (0 reviews)
      # sp32392
      SevereDuty™ Front Brake Pads by Wagner®. Straight through nonrestrictive system design maximizes airflow improving performance and fuel economy. All components; even clamps and hangers; of the system are constructed of premium...
      Engineered Specifically for Each ApplicationSound Tuned to Character of Vehicle
      $344.24 - $547.87
    • (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....
      Feature intricate stainless steel, robotic weld seamsHigh Temp Packing Material Absorbs Excessive Noise while Allowing a Mellow Powerful Sound
      $77.09




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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) / November 22, 2015
    2004 Chevy Blazer
    Was this review helpful for you? Yes
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