Walker 21690 Exhaust Muffler - Front
OE Quality 60-Day Returns
Walker
 Quiet-Flow SS

Walker 21690 Exhaust Muffler - Front

Brand Walker 21690
Position Front
Inlet Outside Diameter 2.25
Muffler Type Reflection
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Body Width 8.81
Inlet Quantity 1
Outlet Inside Diameter 2.25
Outlet Quantity 1
Reversible Yes
Tunable No
Overall Length 19
Body Height 4.25
Body Length 15
Body Material Stainless steel
Finish Aluminized
Inlet 1 Outside Diameter 2.25
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 2.625
Inlet Type Pipe connection
Outlet 1 Inside Diameter 2.25
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line Quiet-Flow SS
Fits Chevrolet and GMC · 38 vehicles

100% stainless steel. Corrosion-resistant construction for long service life.

Precision fit. Specific-fit design helps installation go smoothly.

OE-style sound. Delivers a refined exhaust note without harshness.

Cross-references 5554 for the same application. See all 1.

$67.26Free 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.

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Step 2 — Quantity
Order total $67.26
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 Equinox and Terrain

Walker Quiet-Flow SS muffler Part Number 21690 is a specific-fit exhaust muffler for select Chevrolet Equinox and GMC Terrain applications. It uses 100% stainless-steel body construction with an OE-style sound profile and a precision-fit design for direct replacement service.

Key Features

  • Specific-fit exhaust muffler for select front-position applications
  • 100% stainless-steel body construction
  • Reflection-style muffler design
  • Oval body shape with offset inlet and outlet configuration
  • 2.25-inch inlet and 2.25-inch outlet pipe connection
  • Reversible design for installation flexibility
  • Walker Quiet-Flow SS product line for OE-style sound and fit

Product Details

Walker Quiet-Flow SS Part Number 21690 is built for drivers who need a direct-fit exhaust muffler replacement with factory-style sound characteristics and consistent flow. The oval stainless-steel body measures 19 inches overall, with an 8.81-inch body width, 4.25-inch body height, and 15-inch body length. Its offset inlet and outlet layout supports the specified vehicle applications, including 2018-2024 Chevrolet Equinox front and 2018-2024 GMC Terrain front, along with 2010-2017 Chevrolet Equinox and 2010-2017 GMC Terrain applications listed in the fitment data.

This part cross-references part number 5554 for the same application.

Common Exhaust Issues It Can Address

  • Exhaust noise from a worn or damaged muffler
  • Corrosion-related muffler failure in the exhaust system
  • Poor fitment from a previous replacement part
  • Loss of OE-style exhaust tone after muffler damage
  • Restricted exhaust flow caused by internal muffler deterioration

Installation Notes

Verify the vehicle year, make, model, and position before ordering. This muffler uses pipe connections with a 2.25-inch inlet and 2.25-inch outlet, and the inlet and outlet are offset. For welded assemblies, replace all required parts as listed for the vehicle application and confirm alignment before final installation.

Quality Assurance

Walker Quiet-Flow SS mufflers are part of a stainless-steel exhaust line engineered for precision fit, superior flow, and OE-style sound. Part Number 21690 is designed for select Chevrolet Equinox and GMC Terrain applications and is backed by Walkerโ€™s Quiet-Flow SS product-line construction standards.

Related reading

This part fits 38 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
2024ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2024GMCTerrain—1.5LL4FrontQuiet-Flow SS
2023ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2023GMCTerrain—1.5LL4FrontQuiet-Flow SS
2022ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2022GMCTerrain—1.5LL4FrontQuiet-Flow SS
2021ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2021GMCTerrain—1.5LL4FrontQuiet-Flow SS
2020ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2020GMCTerrain—1.5LL4FrontQuiet-Flow SS
2019ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2019GMCTerrain—1.5LL4FrontQuiet-Flow SS
2018ChevroletEquinox—1.5LL4FrontQuiet-Flow SS
2018GMCTerrain—1.5LL4FrontQuiet-Flow SS
2017ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2017GMCTerrainSL2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2017GMCTerrainSLT2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2017GMCTerrainSLE2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2016ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2016GMCTerrainSL2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2016GMCTerrainSLT2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2016GMCTerrainSLE2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2015ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2015GMCTerrainSL2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2015GMCTerrainSLT2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2015GMCTerrainSLE2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2014ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2014GMCTerrainSLT2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2014GMCTerrainSLE2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2013ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2013GMCTerrainSLT2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2013GMCTerrainSLE2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2012GMCTerrain—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2011GMCTerrain—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010ChevroletEquinox—2.4LL4N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010GMCTerrain—2.4LL4N/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.
5554