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Muffler for 2004 GMC Sierra 2500

We have 34 Items In-stock. Select your vehicle's Submodel to continue.

Walker Quiet-Flow3 Muffler

Walker's Quiet-flow3 muffler features a sophisticated internal routing and tuning technologies for superior flow and premium OE-style sound. Its internal partition baffles and spun-locked heads help improve structural support.

Features
  • OE-style sound
  • Aluminized steel muffler material
Walker Muffler, Walker Quiet-Flow3, Aluminized Steel, Natural
$95.92 List Price $210.52 Save $114.60 Availability: In Stock
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  • SKU#: WK21533
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Anticipated Ship Out Time: 2-3 business days
Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | Base, SLE, SLT, WT

Walker Quiet-Flow SS Muffler

Walker's Quiet-flow SS muffler features a sophisticated internal routing and tuning technologies for superior flow and premium OE-style sound. Its internal partition baffles and spun-locked heads help improve structural support.

Features
  • Stainless steel muffler material
  • OE-style sound
Walker Muffler, Stainless Steel, Natural, Direct Fit
$190.14 List Price $387.60 Save $197.46 Availability: In Stock
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  • SKU#: WK21576
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Anticipated Ship Out Time: 2-3 business days
  • Case Shape: Oval
  • Inlet Quantity: Dual
  • Inlet Size: 3 in.
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Warranty: Lifetime Walker limited warranty
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT

Flowmaster - 50 Series Big Block Mufflers

FLOWMASTER – 50 SERIES BIG BLOCK MUFFLERS

Flowmaster’s Big Block mufflers turn your big rig – truck, SUV or motorhome – into something a little more pleasant to drive, giving it a nice, quiet tone and significant boost in horsepower, torque and fuel economy. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Increases gas mileage, torque and horsepower
  • Backed by a lifetime warranty
  • Fully MIG-welded for maximum strength
  • Comes in stainless steel
  • Quick and easy installation
  • For large SUVs, big trucks, tow vehicles and motorhomes
  • Super quiet inside the cabin
  • Minimizes heat from the engine and vehicle wear-and-tear overall
  • Big resonance chamber keeps interior noise to a minimum
  • Dyno-tested
Flowmaster Muffler, Flowmaster 50 Series Big Block, Aluminized Steel, Gray
$182.99 List Price $236.81 Save $53.82 Availability: In Stock
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  • SKU#: F13530513
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Mild
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 22 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Center (Dual)
  • Inlet Quantity: Dual
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3.5 in.
  • Overall Length: 28 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 12 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"This was easy to install with a lift and welder. Great V8 sound without the vibrating or rattling, like other mufflers. Loud enough to let everybody know without waking the neighbors. Would recommend adding a coat of high temp paint to help with the rust." posted by: on April 7, 2011 view all 2 reviews

Kool Vue Stainless steel Muffler

Kool Vue Stainless Steel Muffler is an affordable replacement for your old and rusty original unit. It is made from stainless steel material for extended durability.

  • Affordable replacement for old and rusty original unit
  • Stainless steel material for extended durability and longer life
  • Comes with 2-year Kool Vue limited warranty

You can't go wrong with Kool Vue parts! From restoration to performance products, Kool Vue has got you covered! Kool Vue is a tried and tested brand trusted by thousands of DIY people and body shops alike; it provides only the best quality products for its customers, and best of all it comes with a 2-year Kool Vue limited warranty!

Kool Vue Muffler, Stainless Steel, Polished, Universal
$95.88 List Price $113.14 Save $17.26 Availability: In Stock
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Intead of 96,
  • SKU#: KV150105
  • Quantity Sold: Sold Individually
  • Sound Level: Mild
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Weld-On
  • Body Length: 14 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Notes: May require minor modifications during installation
  • Outlet Location: Center
  • Outlet Quantity: Dual
  • Outlet Size: 3.5 in.
  • Overall Length: 24 in.
  • Tip Finish: Polished
  • Tip Material: Steel
  • Warranty: 2-year Kool Vue limited warranty
  • Width: 9 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"This comp. was there when I lost My order and I had only my ebay receit. Thay founded my order and sent out right any Thanks" posted by: zzsplash on March 11, 2014 view all 5 reviews

Kool Vue Muffler, Stainless Steel, Polished, Direct Fit
$94.52 List Price $111.53 Save $17.01 Availability: In Stock
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Intead of 95,
  • SKU#: KV150110
  • Quantity Sold: Sold Individually
  • Sound Level: Mild
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On
  • Case Shape: Round
  • Height: 5 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 4 in.
  • Overall Length: 20 in.
  • Tip Finish: Polished
  • Tip Material: Steel
  • Warranty: 2-year Kool Vue limited warranty
  • Width: 5 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"Very high quality muffler,all stainless steel construction,one third the price that other companies charge for the same product.This was a very easy installation to do.The best part was it is a muffler and tail pipe in one." posted by: jp morgan on September 19, 2011 view all 2 reviews

Kool Vue Muffler, Stainless Steel, Polished, Direct Fit
$53.78 List Price $63.46 Save $9.68 Availability: In Stock
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Intead of 54,
  • SKU#: KV150103
  • Quantity Sold: Sold Individually
  • Sound Level: Mild
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On
  • Body Length: 13.75 in.
  • Case Shape: Round
  • Height: 6 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 4 in.
  • Overall Length: 17.5 in.
  • Tip Diameter: 4 in.
  • Tip Finish: Polished
  • Tip Material: Steel
  • Warranty: 2-year Kool Vue limited warranty
  • Width: 6 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"love it sounds great!!!!i buy from here all the time!!!!good price!!!!" posted by: on January 26, 2014 view all 4 reviews

Thrush Turbo Mufflers

THRUSH – TURBO MUFFLERS

Thrush makes a wide selection of mufflers with a choice of sizes and inlet/outlet positions to make sure you get the right fitting muffler for your ride. Thrush Turbo Mufflers have the classic Thrush sound and have a tested reverse flow design. Thrush Mufflers was founded almost 50 years ago during a time when hot rods and muscle cars ruled the streets of America. Fast forward to today and Thrush Mufflers are still the preferred muffler of muscle car and hot rod owners across the land. Be assured that when installing a Thrush Muffler you will get an aggressive and powerful sounding exhaust tone, hence Thrush’s motto; “Vintage Sound…Today’s Power.”

  • Available in 2.25 inch, 2.5 inch and 3 inch inlets and outlets
  • Available muffler shell sizes from 11 inches to 20 inches
  • Made of 100 % aluminized steel
  • Completely reversible for Flexibility during installation
  • Classic Thrush sound
  • Does not void your vehicle’s factory warranty
  • Reverse flow design
Thrush Muffler, Thrush Turbo, Aluminized Steel, Natural
$41.83 List Price $61.18 Save $19.35 Availability: In Stock
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  • SKU#: D2217715
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Weld-On
  • Body Length: 14 in.
  • Case Shape: Oval
  • Height: 4.25 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Tri-Flow
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Overall Length: 18.5 in.
  • Warranty: Lifetime Thrush limited warranty
  • Width: 9.75 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"Good buy, would be better with adapters for ends to match car." posted by: on September 26, 2014 view all 8 reviews

Thrush Muffler, Thrush Turbo, Aluminized Steel, Natural
$44.85 List Price $61.18 Save $16.33 Availability: In Stock
  • APW Bestseller
  • Low Price Guarantee
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  • SKU#: D2217713
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Weld-On
  • Body Length: 14 in.
  • Case Shape: Oval
  • Height: 4.25 in.
  • Includes: Expandable bushings
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Tri-Flow
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 18.5 in.
  • Warranty: Lifetime Thrush limited warranty
  • Width: 9.75 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"Sounds good on my 2005 ford explorer. Nice rumble without it being obnoxious can still talk over the noise levels it produces. Plus it is half the size of original muffler that came with the car." posted by: on January 8, 2014 view all 3 reviews

Thrush Muffler, Thrush Turbo, Aluminized Steel, Natural
$43.97 List Price $61.18 Save $17.21 Availability: In Stock
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  • Low Price Guarantee
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  • SKU#: D2217711
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Weld-On
  • Body Length: 14 in.
  • Case Shape: Oval
  • Height: 4.25 in.
  • Includes: Expandable bushings
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2 in.
  • Internal Construction: Tri-Flow
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2 in.
  • Overall Length: 18.5 in.
  • Warranty: Lifetime Thrush limited warranty
  • Width: 9.75 in.
see more Fits the following 2004 GMC Sierra 2500 submodels:
  • 8 Cyl 6.0L | SLE, SLT, Base, WT
Rating: (see review/s)

"Muffler arrived on time and was right for my car muffler shop was surprised at the price." posted by: porgie on November 10, 2013 view all 4 reviews

More results for 2004 GMC Sierra 2500 Muffler

THRUSH GLASSPACK MUFFLERS

THRUSH – GLASSPACK MUFFLERS

Custom car, muscle car and hot rod owners insist on installing Thrush Mufflers to make their V8-powered vehicles sound even more aggressive. Thrush makes a wide selection... (see more)

DYNOMAX THRUSH TURBO MUFFLERS

DYNOMAX – THRUSH TURBO MUFFLERS

Dynomax offers a selection of mufflers with a choice of sizes and inlet/outlet positions to make sure you get the right fitting muffler for your ride. Dynomax Thrush... (see more)

DYNOMAX ULTRA FLO WELDED MUFFLERS

DYNOMAX – ULTRA FLOW WELDED MUFFLERS

Custom car, muscle car and hot rod owners insist on installing Dynomax Ultra Flow Welded Mufflers to give their high-powered vehicles a powerful and deep tone that... (see more)

DYNOMAX ULTRA FLO SS MUFFLERS

DYNOMAX – ULTRA FLOW SS MUFFLERS

Custom car, muscle car and hot rod owners insist on installing Dynomax Ultra Flow SS Mufflers to give their high-powered vehicles a powerful and deep tone that... (see more)

DYNOMAX SUPER TURBO MUFFLERS

DYNOMAX – SUPER TURBO MUFFLERS

Custom car, muscle car and hot rod owners insist on installing Dynomax Super Turbo Mufflers to give their high-powered traditionally aggressive sounding vehicles a... (see more)