Product Description
The WALKER 21746 Quiet-Flow® SS Exhaust Muffler is a direct-fit, stainless-steel premium replacement engineered for Subaru Forester and Impreza 2.5L models. As the only muffler line in the broad aftermarket with 100% stainless-steel construction, this unit provides superior corrosion resistance and long-lasting durability—far exceeding aluminized alternatives.
It features OE-style domed heads, louvered tubes, and precision internal components designed to restore factory exhaust tone and performance. Installation is straightforward with OE-style welded flange, hangers, and pipe routing, ensuring a perfect fit without welding.
Key Features
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100% Stainless-Steel Construction for maximum corrosion protection
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Direct-Fit Design with OE-style hangers and brackets
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Premium Acoustic Tuning through louvered tubes & OE-style domed heads
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Mechanically Joined Tubes for durability and thermal stability
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Internal Drainage System reduces moisture buildup
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Validated for Flow & Sound to match OE performance
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Backed by Walker’s Limited Lifetime Warranty & 90-Day Safe and Sound® Guarantee
Technical Specifications
| Specification |
Detail |
| Shape |
Oval |
| Finish |
Natural |
| Body Material |
Stainless Steel |
| Inlet Type |
2 Bolt Welded Flange |
| Outlet Type |
Tip |
| Body Height |
7.000 in |
| Body Length |
13.000 in |
| Body Width |
9.000 in |
| Inlet Inside Diameter |
— (flanged) |
| Outlet Outside Diameter |
2.750 in |
| Hanger Included |
Yes |
| Inlet Location |
Offset |
| Inlet Quantity |
1 |
| Outlet Quantity |
1 |
| Reversible |
No |
| Tunable |
No |
| Overall Length |
22.750 in |
| Inlet Offset |
1.625 in |
| Universal or Specific Fit |
Specific |
| Grade Type |
Premium |
Vehicle Compatibility
Subaru
Forester
Impreza
Installation & Warranty Notes
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Direct bolt-on installation using OE-style hanger positions
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No welding or fabrication required
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Designed for proper backpressure and factory sound characteristics
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Covered by Walker Limited Lifetime Warranty + 90-Day Guarantee