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GMC Sierra Mufflers 


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1 - 4 of 4
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Length: 20"
Outlet Diameter: 3.5"
Inlet Diameter: 3.5"
Style: Round
Finish: Stainless Steel
Retail: $306.25
$196.00


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Length: 20"
Outlet Diameter: 4"
Inlet Diameter: 4"
Style: Round
Finish: Stainless Steel
Retail: $321.88
$206.00


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Length: 20"
Outlet Diameter: 3.5"
Inlet Diameter: 3.5"
Style: Oval
Finish: Stainless Steel
Retail: $306.25
$196.00


Free Shipping!


Length: 20"
Outlet Diameter: 4"
Inlet Diameter: 4"
Style: Oval
Finish: Stainless Steel
Retail: $321.88
$206.00


Free Shipping!


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When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Not able to find what you are looking for?

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OPEN BOX 5"CatBack Exhaust Muffler Kit FOR 01-05 GMC Sierra 2500 Duramax 6.6L V8

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  • Mufflers(4)
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  • MagnaFlow(4)
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  • Stainless Steel (4)
Inlet Diameter
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  • 20" (4)
Outlet Diameter
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  • $300-$500(4)


GMC Sierra Mufflers 


Choose Your Vehicle:


Shop GMC Sierra Mufflers by Brand

1 - 4 of 4
Sort by:




Length: 20"
Outlet Diameter: 3.5"
Inlet Diameter: 3.5"
Style: Round
Finish: Stainless Steel
Retail: $306.25
$196.00


Free Shipping!


Length: 20"
Outlet Diameter: 4"
Inlet Diameter: 4"
Style: Round
Finish: Stainless Steel
Retail: $321.88
$206.00


Free Shipping!


Length: 20"
Outlet Diameter: 3.5"
Inlet Diameter: 3.5"
Style: Oval
Finish: Stainless Steel
Retail: $306.25
$196.00


Free Shipping!


Length: 20"
Outlet Diameter: 4"
Inlet Diameter: 4"
Style: Oval
Finish: Stainless Steel
Retail: $321.88
$206.00


Free Shipping!


Previous1Next

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Not able to find what you are looking for?

5" CatBack Exhaust Muffler Kit 01-05 GMC Sierra 2500 Duramax 6.6L Turbo Diesel

OPEN BOX 5"CatBack Exhaust Muffler Kit FOR 01-05 GMC Sierra 2500 Duramax 6.6L V8

All-Welded-Stainless Muffler for 2011-2017 Chevy Silverado 2500 HD, GMC Sierra

5" Cat Back Exhaust Muffler Kit 06-07 GMC Sierra 2500 Duramax 6.6L Turbo Diesel

99-08 Chevrolet Silverado GMC Sierra Truck Dual Exhaust Kit Flowmaster 44 Rolled

2014-2025 Silverado 5.3L Muffler Delete, Aggressive Sound