Walker 21672 Exhaust Muffler - Left
OE Quality 60-Day Returns
Walker
 Quiet-Flow SS

Walker 21672 Exhaust Muffler - Left

Brand Walker 21672
Position Left
Muffler Type Reflection
Universal Or Specific Fit Specific
Shape Oval
Grade Type Regular
Body Width 9
Inlet Quantity 1
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 26
Body Height 7
Body Length 13
Body Material Stainless steel
Finish Aluminized
Inlet 1 Type 2 bolt welded flange
Inlet Configuration Offset
Inlet Offset 1.625
Inlet Type 2 bolt welded flange
Outlet 1 Outside Diameter 2.25
Outlet 1 Type Tip
Outlet Configuration Offset
Outlet Outside Diameter 2.25
Outlet Type Tip
Product line Quiet-Flow SS
Fits Subaru · 6 vehicles

100% stainless steel. Corrosion-resistant construction for long-lasting durability.

Precision fit. Engineered for a specific fit with OE-style sound.

Quiet-Flow SS. Walker muffler line with superior flow performance.

Cross-references BRExhaust 229-039, 229-023 and 229023 for the same application. See all 4.

$105.92Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $105.92
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 Subaru Legacy

Walker Quiet-Flow SS 21672 is a specific-fit exhaust muffler for select Subaru Legacy applications. It uses 100% stainless-steel body construction with an OE-style sound profile, precision fit, and flow-focused internal design for a direct replacement on the left side.

Key Features

  • Specific-fit exhaust muffler for select Subaru Legacy models
  • Walker Quiet-Flow SS product line with stainless-steel construction
  • Oval muffler body with reflection-style muffler design
  • Offset inlet and offset outlet layout
  • 2-bolt welded flange inlet for vehicle-specific installation
  • 2.25-inch outlet diameter with tip outlet configuration
  • Aluminized finish
  • Part number 21672

Product Details

This Walker muffler is built for 2005-2009 Subaru Legacy, left-side applications, including 2005 Legacy Premium with dual catalytic converters, 2005 Legacy Premium SULEV, and 2006-2008 Legacy Premium and Limited models. The Quiet-Flow SS line is Walker’s stainless-steel muffler family, developed for direct-fit replacement where OE-style sound and consistent exhaust routing matter. Part number 21672 is shaped as an oval unit with a 26-inch overall length, 13-inch body length, 7-inch body height, and 9-inch body width.

This part cross-references BRExhaust 229-039 for the same application.

Common Issues It Can Address

  • Rust-through or corrosion in the original muffler body
  • Exhaust noise from a damaged internal muffler structure
  • Poor fitment after a previous exhaust repair
  • Restricted exhaust flow caused by a deteriorated muffler
  • Need for a direct replacement on the left side of a Subaru Legacy exhaust system

Installation Notes and Tips

Fits 2009 Subaru Legacy, left. Fits 2006-2008 Subaru Legacy, left. Fits 2005 Subaru Legacy, left. Verify the vehicle’s exhaust configuration before installation, especially on 2005 models with dual catalytic converters or SULEV equipment. The inlet uses a 2-bolt welded flange with offset configuration, and the outlet is a 2.25-inch tip style with offset routing.

Quality Assurance

Walker Quiet-Flow SS mufflers are part of a stainless-steel product line built for precision fit and OE-style sound characteristics. Part number 21672 is engineered for direct replacement use on listed Subaru Legacy applications.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2009SubaruLegacy2.5LH4LeftPremium; Limited Lifetime Warranty; Quiet-Flow SS
2008SubaruLegacy2.5LH4LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007SubaruLegacy2.5LH4LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006SubaruLegacy2.5LH4LeftPremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005SubaruLegacy2.5LH4LeftPremium; Super Ultra Low Emission Vehicle (SULEV); Limited Lifetime Warranty; Quiet-Flow SS
2005SubaruLegacy2.5LH4LeftPremium; with Dual Catalytic Converters; Limited Lifetime Warranty; Quiet-Flow SS
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BRExhaust — 229-039229-0232290232103234849