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Muffler for 2003 GMC Sierra 2500

We have 40 Items In-stock.

AutoTrust Silver Direct fit Muffler

AutoTrust Silver Mufflers are guaranteed to meet or exceed the original manufacturer's standards and quality. Backed by a 3-year limited warranty - If the part breaks or is damaged anytime within 3 years from purchase, simply cover shipping and handling and we will send you a new part.

Features:

  • Stainless steel material for extended durability and longer life
  • Dramatically decreases the noise
  • Improves vehicle's performance

AutoTrust Silver Muffler - Polished, Stainless Steel, Direct Fit

Best Seller
$77.91 $91.93 You Save $14.02 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: WKV150102ATS
  • Material: Stainless Steel
  • Color/Finish: Polished
  • Product Fit: Direct Fit
  • 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: Stainless Steel
  • Warranty: 3-year AutoTrust Silver limited warranty
  • Width: 6 in.
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Fits the following 2003 GMC Sierra 2500 Submodels

  • 8 Cyl 6.0L | SLE, SLT, Base, WT
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Customer Review: (see review/s)
  • Muffler priced right said it was a direct fit. Not the case. I spent more on the installation then the cost of the muffler. Had to extent and add a bracket to hold it up. The least the could have do e is put a bracket on to fit the application or said it needed professional installation or not a direct fit

    posted by: on January 9, 2014

AutoTrust Silver Muffler - Polished, Stainless Steel, Direct Fit

$99.94 $117.93 You Save $17.99 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: WKV150116ATS
  • Material: Stainless Steel
  • Color/Finish: Polished
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Sound Level: Mild
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On
  • Body Length: 9 in.
  • Case Shape: Oval
  • Height: 3.9 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2 in.
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 4 in.
  • Overall Length: 14.8 in.
  • Tip Diameter: 4 in.
  • Tip Finish: Polished
  • Tip Material: Steel
  • Warranty: 3-year AutoTrust Silver limited warranty
  • Width: 6 in.
See more

Fits the following 2003 GMC Sierra 2500 Submodels

  • 8 Cyl 6.0L | SLE, SLT, Base, WT
See more

AutoTrust Silver Muffler - Polished, Stainless Steel, Direct Fit

$77.91 $91.93 You Save $14.02 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: WKV150103ATS
  • Material: Stainless Steel
  • Color/Finish: Polished
  • Product Fit: Direct Fit
  • 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: 3-year AutoTrust Silver limited warranty
  • Width: 6 in.
See more

Fits the following 2003 GMC Sierra 2500 Submodels

  • 8 Cyl 6.0L | SLE, SLT, Base, WT
See more

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 - Natural, Stainless Steel, Direct Fit

$190.14 $387.60 You Save $197.46 (51%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: WK21576
  • Material: Stainless Steel
  • Color/Finish: Natural
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Anticipated Ship Out Time: Same day - 1 business day
  • 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
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Fits the following 2003 GMC Sierra 2500 Submodels

  • 8 Cyl 6.0L | Base, SLE, SLT, WT
See more

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 Quiet-Flow3 Muffler - Natural, Aluminized Steel, Direct Fit

Best Seller
$108.61 $210.52 You Save $101.91 (48%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: WK21533
  • Series: Walker Quiet-Flow3
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Anticipated Ship Out Time: Same day - 1 business day
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Fits the following 2003 GMC Sierra 2500 Submodels

  • 8 Cyl 6.0L | Base, SLE, SLT, WT
See more

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 50 Series Big Block Muffler - Gray, Aluminized Steel, Minor Modifications

$192.02 $251.01 You Save $58.99 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: F13530513
  • Series: Flowmaster 50 Series Big Block
  • Material: Aluminized Steel
  • Color/Finish: Gray
  • 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.
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Fits the following 2003 GMC Sierra 2500 Submodels

  • All Engines | All Submodels
See more
Customer Review: (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

  • I use flowmaster products on all my vehicles simply because they are the best in my book. I like the sound and performance of the product.

    posted by: on December 3, 2008

Flowmaster - 50 Series Heavy Duty Mufflers

FLOWMASTER – 50 SERIES HEAVY-DUTY MUFFLERS

Flowmaster’s 50 Series Heavy-Duty mufflers turn your truck into something a little more enjoyable to drive, making it more fuel efficient, faster and easier on your vehicle’s powertrain – especially good when you’re under load or towing. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Increases torque and horsepower while reducing noise – great for heavy-duty trucks
  • 3-year warranty for aluminized steel, lifetime warranty for stainless steel
  • Fully MIG-welded for maximum strength
  • Come in stainless steel and 16-gauge aluminized steel
  • Quick and easy installation
  • Dyno-tested
  • Designed primarily for Dodge trucks with Hemis
  • Increases torque, horsepower and fuel economy – perfect for tow vehicles/heavy loads
  • Perfect for diesel and/or gas vehicles
  • Features unique 3-chamber design

Flowmaster 50 Series Heavy Duty Muffler - Natural, Aluminized Steel, Universal

$191.86 $250.80 You Save $58.94 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: F13853558
  • Series: Flowmaster 50 Series Heavy Duty
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Universal
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Weld-On
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3.5 in.
  • Internal Construction: 3 Chamber
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3.5 in.
  • Overall Length: 18 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 10 in.
See more

Fits the following 2003 GMC Sierra 2500 Submodels

  • All Engines | All Submodels
See more

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