Walker 21554 Exhaust Muffler
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Walker
 Quiet-Flow SS

Walker 21554 Exhaust Muffler

Brand Walker 21554
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Body Width 9
Inlet Quantity 1
Outlet Inside Diameter 2.625
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 31.625
Body Height 7
Body Length 25
Body Material Stainless steel
Finish Aluminized
Inlet 1 Type 2 bolt welded flange
Inlet Configuration Offset
Inlet Offset 1.125
Inlet Type 2 bolt welded flange
Muffler Type Combination
Outlet 1 Inside Diameter 2.625
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 construction. Resists corrosion for long-lasting exhaust performance.

Precision fit. OE-style sound and superior flow in a direct replacement muffler.

Oval combination design. Delivers a balanced fit and efficient exhaust flow.

Cross-references OSC 2581 for the same application. See all 1.

$159.38Free shipping
Out of stock
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Step 2 — Quantity
Order total $159.38
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow SS Muffler for GM Vans

Walker Quiet-Flow SS muffler Part Number 21554 is a direct-fit exhaust muffler built for specific GM van applications. It combines stainless-steel body construction with an OE-style sound profile and a precision-fit layout for service replacement on select Chevrolet Express 1500, Chevrolet Express 2500, GMC Savana 1500, and GMC Savana 2500 models.

Key Features

  • Specific-fit exhaust muffler for select Chevrolet and GMC vans
  • Oval body shape with offset inlet and offset outlet configuration
  • 100% stainless-steel body construction for corrosion resistance
  • 2-bolt welded flange inlet for OE-style connection
  • 2.625-inch outlet inside diameter
  • Overall length: 31.625 inches; body length: 25 inches; body width: 9 inches; body height: 7 inches
  • Walker Quiet-Flow SS product line focuses on precision fit, steady exhaust flow, and OE-style sound

Product Details

Walker Quiet-Flow SS Part Number 21554 is an exhaust muffler in the Quiet-Flow SS line, a stainless-steel muffler family developed for broad domestic and import coverage. This unit uses an oval, combination-style muffler body with a stainless-steel body material and aluminized finish, plus a 2-bolt welded flange inlet and pipe-connection outlet. For buyers searching for a 2003-2008 Chevrolet Express 1500 muffler or a 2003-2008 GMC Savana 1500 muffler, this part provides the correct fitment profile. It also matches 2003-2005 Chevrolet Express 2500 and 2003-2005 GMC Savana 2500 applications.

This part cross-references OSC 2581 for the same application.

What It Helps Address

  • Exhaust noise from a worn or damaged muffler
  • Rust-related muffler deterioration on high-mileage vans
  • Restricted exhaust flow caused by internal muffler failure
  • Fitment issues when replacing an OE-style muffler on GM Express and Savana models
  • Service replacement needs for a direct-fit Chevrolet Express 1500 muffler or GMC Savana 2500 muffler

Installation Notes and Tips

Verify the inlet and outlet configuration before installation, since this muffler uses an offset inlet and offset outlet with a 2-bolt welded flange inlet. Confirm vehicle application by year, make, and model before ordering. If the exhaust assembly is welded, replace all required related parts during service to ensure proper alignment and sealing.

Quality Assurance

Walker Quiet-Flow SS mufflers are built with 100% stainless-steel construction and are engineered for precision fit and OE-style sound. This part is listed for select 2003-2008 Chevrolet Express 1500 and GMC Savana 1500 models, plus 2003-2005 Chevrolet Express 2500 and GMC Savana 2500 models.

Related reading

This part fits 36 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BasePositionNotes
2008ChevroletExpress 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008ChevroletExpress 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008GMCSavana 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2008GMCSavana 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007ChevroletExpress 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007ChevroletExpress 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007GMCSavana 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007GMCSavana 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006ChevroletExpress 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006ChevroletExpress 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006GMCSavana 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006GMCSavana 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005ChevroletExpress 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005ChevroletExpress 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005ChevroletExpress 25004.3LV6135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005ChevroletExpress 25005.3LV8135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005GMCSavana 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005GMCSavana 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005GMCSavana 25004.3LV6135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005GMCSavana 25005.3LV8135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletExpress 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletExpress 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletExpress 25004.3LV6135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004ChevroletExpress 25005.3LV8135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004GMCSavana 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004GMCSavana 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004GMCSavana 25004.3LV6135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004GMCSavana 25005.3LV8135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003ChevroletExpress 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003ChevroletExpress 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003ChevroletExpress 25004.3LV6135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003ChevroletExpress 25005.3LV8135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003GMCSavana 15005.3LV8—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003GMCSavana 15004.3LV6—N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003GMCSavana 25004.3LV6135.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003GMCSavana 25005.3LV8135.0"N/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.
OSC — 2581