Walker 21481 Exhaust Muffler
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Walker
 Quiet-Flow SS

Walker 21481 Exhaust Muffler

Brand Walker 21481
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Inlet Inside Diameter 2.5
Body Width 9
Inlet Quantity 1
Outlet Inside Diameter 2.5
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 24
Body Height 7
Body Length 20
Body Material Stainless steel
Finish Aluminized
Inlet 1 Inside Diameter 2.5
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 1.625
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2.5
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line Quiet-Flow SS
Fits Chevrolet and GMC · 36 vehicles

100% stainless steel. Corrosion-resistant construction helps stand up to harsh exhaust conditions.

Quiet-Flow SS line. Delivers OE-style sound with superior flow.

Combination muffler. Oval design with pipe connections for a precise fit.

Cross-references Anchor 2438 for the same application. See all 1.

$113.73Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
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Step 2 — Quantity
Order total $113.73
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow SS Muffler for Colorado and Canyon

Walker Quiet-Flow SS muffler Part Number 21481 is a specific-fit exhaust muffler built for 2004-2012 Chevrolet Colorado and 2004-2012 GMC Canyon applications. It uses 100% stainless-steel construction for the body and is shaped as an oval, offset-in/offset-out replacement with OE-style sound characteristics.

Key Features

  • Specific-fit exhaust muffler for select Chevrolet Colorado and GMC Canyon models
  • 100% stainless-steel body construction for corrosion resistance
  • Oval combination muffler design with 2.5 in. inlet and 2.5 in. outlet
  • Offset inlet and outlet configuration for direct replacement fitment
  • Precision-fit design aimed at maintaining factory-style exhaust tone
  • Aluminized finish with stainless-steel body material
  • Walker Quiet-Flow SS product line for domestic and import vehicle coverage

Product Details

Walker Quiet-Flow SS Part Number 21481 is an exhaust muffler engineered for direct replacement on compatible Colorado and Canyon exhaust systems. The muffler measures 24 inches overall, with a 20-inch body length, 9-inch body width, and 7-inch body height. Its 2.5-inch pipe connection inlet and outlet, along with the offset configuration, support fitment on the listed applications while preserving a factory-like exhaust note.

The Quiet-Flow SS line focuses on stainless-steel construction, precise fitment, and controlled exhaust flow. For buyers searching for a 2004-2012 Chevrolet Colorado muffler replacement or a 2004-2012 GMC Canyon exhaust muffler, Part Number 21481 matches the listed vehicle coverage and configuration.

This part cross-references Anchor 2438 for the same application.

Common Problems It Can Address

  • Rusted or corroded muffler housing
  • Exhaust noise from a damaged internal muffler structure
  • Restricted exhaust flow caused by a failing muffler
  • Factory muffler replacement needs on Colorado and Canyon trucks
  • Fitment issues when replacing an offset, 2.5-inch exhaust muffler

Installation Notes

Compatible With 2004-2012 Chevrolet Colorado and 2004-2012 GMC Canyon, this muffler uses pipe-connection inlet and outlet ends with offset positioning. Verify exhaust routing, pipe diameter, and overall length before installation, especially on welded assemblies where related exhaust parts may need replacement together. Professional exhaust installation is recommended for proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with 100% stainless-steel construction and are positioned as precision-fit, OE-style replacement components for a broad range of domestic and import vehicles. Part Number 21481 is part of Walker’s Quiet-Flow SS line, which is focused on controlled sound and consistent fitment.

Related reading

This part fits 36 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2012ChevroletColorado2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012ChevroletColorado3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012GMCCanyon2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012GMCCanyon3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011ChevroletColorado2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011ChevroletColorado3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011GMCCanyon2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011GMCCanyon3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010ChevroletColorado2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010ChevroletColorado3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010GMCCanyon2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010GMCCanyon3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009ChevroletColorado2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009ChevroletColorado3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009GMCCanyon2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009GMCCanyon3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008ChevroletColorado2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008ChevroletColorado3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008GMCCanyon2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008GMCCanyon3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007ChevroletColorado3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007ChevroletColorado2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007GMCCanyon2.9LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007GMCCanyon3.7LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006ChevroletColorado3.5LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006ChevroletColorado2.8LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006GMCCanyon3.5LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006GMCCanyon2.8LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005ChevroletColorado3.5LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005ChevroletColorado2.8LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005GMCCanyon3.5LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005GMCCanyon2.8LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletColorado3.5LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletColorado2.8LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004GMCCanyon3.5LL5N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004GMCCanyon2.8LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 2438