HomeExhaust > MufflersWalker 21684 Exhaust Muffler
Part #: 21684

Walker 21684 Exhaust Muffler

Quiet-Flow SS
⚙️ 21 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Quiet-Flow SS
🚗Fitment: Cadillac, Chevrolet, and GMC, Escalade, Escalade ESV, Escalade EXT, Tahoe, Yukon, and Yukon XL 1500
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Overview of Walker Quiet-Flow SS Exhaust Muffler 21684

The Walker Quiet-Flow SS Exhaust Muffler 21684 is designed specifically for select Cadillac, Chevrolet, and GMC models. Engineered with a reflection muffler type and constructed from aluminized stainless steel, this muffler offers a precise fit and durable performance for vehicles like the Escalade, Tahoe, and Yukon.

  • Reflection muffler type for effective sound attenuation
  • Specific fit for Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Tahoe, GMC Yukon, and Yukon XL 1500
  • Oval shape with 11.5-inch body width and 6-inch body height
  • 3-inch inlet and outlet inside diameters with offset pipe connections
  • Durable aluminized stainless steel body with a 30-inch overall length

Detailed Product Features and Specifications

This Walker Quiet-Flow SS muffler (part number 21684) features a reflection design that helps reduce exhaust noise by reflecting sound waves within the muffler chamber. The oval-shaped body measures 11.5 inches wide, 6 inches high, and 25 inches in length, providing a compact yet efficient design. Both the inlet and outlet have 3-inch inside diameters with offset pipe connections, ensuring a secure and specific fit for the intended vehicle models. The muffler is constructed from aluminized stainless steel, offering corrosion resistance and durability under typical driving conditions.

Quiet-Flow SS Product Line Information

The Quiet-Flow SS line by Walker focuses on providing exhaust mufflers that balance noise reduction and durability. This product line uses stainless steel materials and reflection muffler technology to deliver consistent performance and longevity. The 21684 muffler is part of this line, designed to meet the specific exhaust requirements of full-size SUVs and trucks from Cadillac, Chevrolet, and GMC.

Applications and Problem Solving

  • Replacement muffler for worn or damaged exhaust systems on Cadillac Escalade and Chevrolet Tahoe
  • Reduces excessive exhaust noise caused by rusted or failing mufflers
  • Helps restore proper exhaust flow and engine performance
  • Prevents exhaust leaks that can lead to decreased fuel efficiency
  • Maintains vehicle emissions compliance by ensuring proper exhaust function

Installation Notes and Tips

The Walker 21684 muffler is designed for specific fitment and requires proper alignment of the 3-inch offset inlet and outlet pipe connections. It is not reversible or tunable, so ensure correct orientation during installation. Professional installation is recommended to maintain exhaust system integrity and avoid leaks.

Quality Assurance and Warranty

Walker manufactures the Quiet-Flow SS muffler 21684 with aluminized stainless steel for corrosion resistance and durability. While specific warranty details are not provided here, Walker products typically meet industry standards for quality and reliability. Verify warranty coverage with the manufacturer or authorized distributor.

BrandWalker
Part Number21684
PositionQuiet-Flow SS
Muffler TypeReflection
Universal Or Specific FitSpecific
ShapeOval
Grade TypeRegular
Inlet Inside Diameter3
Body Width11.5
Inlet Quantity1
Outlet Inside Diameter3
Outlet Quantity1
ReversibleNo
TunableNo
Overall Length30
Body Height6
Body Length25
Body MaterialStainless steel
FinishAluminized
Inlet 1 Inside Diameter3
Inlet 1 TypePipe connection
Inlet ConfigurationOffset
Inlet Offset3.5
Inlet TypePipe connection
Outlet 1 Inside Diameter3
Outlet 1 TypePipe connection
Outlet ConfigurationOffset
Outlet TypePipe connection

This part fits 21 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2010CadillacEscaladeBase6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010CadillacEscalade ESV6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010CadillacEscalade EXT6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010GMCYukonDenali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2010GMCYukon XL 1500Denali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009CadillacEscaladeBase6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009CadillacEscalade ESV6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009CadillacEscalade EXT6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009ChevroletTahoe6.2LV8N/APremium; Limited Lifetime Warranty; Quiet-Flow SS
2009GMCYukonDenali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2009GMCYukon XL 1500Denali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008CadillacEscaladeBase6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008CadillacEscalade ESV6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008CadillacEscalade EXT6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008GMCYukonDenali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008GMCYukon XL 1500Denali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007CadillacEscalade6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007CadillacEscalade ESV6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007CadillacEscalade EXT6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007GMCYukonDenali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007GMCYukon XL 1500Denali6.2LV8N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2075752920757530

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.