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Muffler for 1998 GMC K2500

We have 47 Items In-stock. Select your vehicle's Submodel to continue.

Walker Muffler

Walker Muffler, Aluminized Steel, Natural, Direct Fit
Walker Muffler Walker Muffler
$64.72 List Price $130.02 Save $65.30 Availability: In Stock
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  • SKU#: WK18906
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Anticipated Ship Out Time: Same day - 1 business day
  • Case Shape: Oval
  • Inlet Quantity: Dual
  • Inlet Size: 2.5 in.
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.75 in.
  • Warranty: 90-day Walker limited warranty
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SL, Sierra SLE, Sierra SLT
  • 8 Cyl 7.4L | Sierra SL, Sierra SLE, Sierra SLT
Walker Muffler, Aluminized Steel, Natural, Direct Fit
Walker Muffler Walker Muffler
$114.43 List Price $200.72 Save $86.29 Availability: In Stock
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  • SKU#: WK21400
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Anticipated Ship Out Time: Same day - 1 business day
Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SL, Sierra SLE, Sierra SLT
  • 8 Cyl 7.4L | Sierra SL, Sierra SLE, Sierra SLT

Flowmaster Muffler

Flowmaster Muffler, Flowmaster 40 Series Original, Stainless Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$87.08 List Price $113.84 Save $26.76 Availability: In Stock
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  • SKU#: F138043043
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SLE, Sierra SL, Sierra SLT
  • 8 Cyl 7.4L | Sierra SLE, Sierra SL, Sierra SLT
  • 8 Cyl 5.0L | Sierra SLE, Sierra SL, Sierra SLT
Flowmaster Muffler, Flowmaster Super 50 Series, Aluminized Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$136.40 List Price $178.31 Save $41.91 Availability: In Stock
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  • SKU#: F13524553
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 17 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Center (Dual)
  • Inlet Quantity: Dual
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 23 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 10 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SL, Sierra SLE, Sierra SLT
  • 8 Cyl 7.4L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster Super 40 Series, Aluminized Steel, Black
Flowmaster Muffler Flowmaster Muffler
$94.44 List Price $123.45 Save $29.01 Availability: In Stock
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  • SKU#: F13953048
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13.5 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19.5 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 10 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 6.5L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster Super 44 Series, Aluminized Steel, Black
Flowmaster Muffler Flowmaster Muffler
$83.90 List Price $109.67 Save $25.77 Availability: In Stock
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  • SKU#: F13943048
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.0L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster 40 Series Original, Aluminized Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$81.32 List Price $106.31 Save $24.99 Availability: In Stock
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  • SKU#: F1343043
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.0L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster 70 Series, Aluminized Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$152.15 List Price $198.88 Save $46.73 Availability: In Stock
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  • SKU#: F13524703
  • 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: 2.25 in.
  • Internal Construction: Perforated
  • Notes: Minor Modifications
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 28 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 10 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SL, Sierra SLE, Sierra SLT
  • 8 Cyl 7.4L | Sierra SL, Sierra SLE, Sierra SLT
Rating: (see review/s)

"This baby came packaged better than electronic stuff I ve ordered from big companies.. Custom shop had no problems installing. They had to cut and bend an inlet pipe to match spacing but that was it. No problems matching that beautiful 3 outlet pipe... Sounds great noticed pickup is better and gas mileage went up too. Good quality workmanship." posted by: Top on July 26, 2014 view all 2 reviews

Flowmaster Muffler, Flowmaster Super 50 Series, Stainless Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$142.98 List Price $186.91 Save $43.93 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
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  • SKU#: F138524553
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 17 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Center (Dual)
  • Inlet Quantity: Dual
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 23 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 10 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SL, Sierra SLE, Sierra SLT
  • 8 Cyl 7.4L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster Super 40 Series, Stainless Steel, Black
Flowmaster Muffler Flowmaster Muffler
$98.98 List Price $129.39 Save $30.41 Availability: In Stock
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  • SKU#: F13853048
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13.5 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19.5 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 10 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 6.5L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster Super 44 Series, Stainless Steel, Black
Flowmaster Muffler Flowmaster Muffler
$94.44 List Price $123.45 Save $29.01 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
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)
  • SKU#: F13843048
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.0L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster 40 Series Delta Flow, Aluminized Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$94.44 List Price $123.45 Save $29.01 Availability: In Stock
  • Free Ground Shipping
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  • SKU#: F13943043
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.0L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster Pro Series, Stainless Steel, Black
Flowmaster Muffler Flowmaster Muffler
$178.38 List Price $233.18 Save $54.80 Availability: In Stock
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  • SKU#: F1313016100
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 16 in.
  • Case Shape: Round
  • Height: 6 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Chambered
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 17 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 6 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 6.5L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster 50 Series Big Block, Aluminized Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$192.02 List Price $251.01 Save $58.99 Availability: In Stock
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  • SKU#: F13527504
  • 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: 2.75 in.
  • Internal Construction: Chambered
  • Outlet Location: Center (Dual)
  • Outlet Quantity: Dual
  • Outlet Size: 2.5 in.
  • Overall Length: 28 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 12 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 5.7L | Sierra SL, Sierra SLE, Sierra SLT
  • 8 Cyl 7.4L | Sierra SL, Sierra SLE, Sierra SLT
Flowmaster Muffler, Flowmaster Super 50 Series, Aluminized Steel, Gray
Flowmaster Muffler Flowmaster Muffler
$136.40 List Price $178.31 Save $41.91 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
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  • SKU#: F1353058
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 17 in.
  • Case Shape: Oval
  • Height: 5 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 3 in.
  • Internal Construction: Perforated
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 3 in.
  • Overall Length: 23 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 10 in.
see more Fits the following 1998 GMC K2500 submodels:
  • 8 Cyl 6.5L | Sierra SL, Sierra SLE, Sierra SLT