Product Description
The WALKER 21528 Quiet-Flow® SS Exhaust Muffler is a premium, direct-fit stainless-steel replacement designed to restore OE-style performance, sound, and exhaust flow on select Chevrolet and Pontiac compact vehicles. As the only broad-market muffler made with 100% stainless-steel construction, it provides exceptional corrosion resistance and longevity compared to traditional aluminized-steel mufflers.
Engineered with OE-style louvered tubes, domed heads, and internal partitions, this muffler delivers precise acoustic control for a smooth, factory-correct exhaust tone. Mechanically joined tubes and spun-locked heads allow thermal expansion without distortion, ensuring long service life. With OE-style hangers, brackets, and pipe routing, installation is quick and requires no welding or fabrication.
Key Features
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100% Stainless-Steel Construction for maximum corrosion resistance and long life
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Direct-Fit, Bolt-On Replacement using OE-style hangers and brackets
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OE-Style Acoustic Tuning with louvered tubes and domed heads for premium sound quality
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Mechanically Joined Internal Tubes minimize distortion during temperature changes
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Internal Drainage System reduces moisture accumulation for extended durability
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Acoustic & Flow Tested to ensure reliable OE-style performance
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Backed by Walker’s Limited Lifetime Warranty and 90-Day Safe & Sound® Guarantee
Technical Specifications
| Specification |
Detail |
| Shape |
Oval |
| Finish |
Aluminized |
| Body Material |
Stainless Steel |
| Inlet Type |
Pipe Connection |
| Outlet Type |
Pipe Connection |
| Inlet Inside Diameter |
1.750 in |
| Outlet Outside Diameter |
2.000 in |
| Inlet Location |
Offset |
| Outlet Location |
Offset |
| Inlet Quantity |
1 |
| Outlet Quantity |
1 |
| Body Height |
7.000 in |
| Body Length |
18.000 in |
| Body Width |
9.000 in |
| Overall Length |
28.875 in |
| Inlet Offset |
1.750 in |
| Reversible |
No |
| Tunable |
No |
| Universal or Specific Fit |
Specific |
| Grade Type |
Premium |
Vehicle Compatibility
(One muffler required per vehicle unless otherwise noted.)
Chevrolet
Cobalt
Pontiac
G5
Pursuit
Installation & Warranty Notes
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Direct-fit design uses factory-style hangers and pipe routing
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No welding required—bolt-on installation
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Inspect clamps, gaskets, and rubber isolators during installation
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Designed to restore OE backpressure and exhaust tone
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Includes Walker’s limited lifetime warranty and 90-Day Safe & Sound® Guarantee
