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Walker 21725 Exhaust Muffler
| Brand | Walker 21725 |
|---|---|
| Muffler Type | Reflection |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2.625 |
| Body Width | 7 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 3 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 32.5 |
| Body Height | 9 |
| Body Length | 26 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2.625 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 2.625 |
| Inlet Type | Pipe connection |
| Outlet 1 Inside Diameter | 3 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Offset |
| Outlet Type | Pipe connection |
| Product line | Quiet-Flow SS |
| Fits | Ford · 12 vehicles |
100% stainless steel. Corrosion-resistant construction for long service life.
Precision fit. Engineered for a specific fit with OE-style sound.
Quiet-Flow SS line. Walker’s muffler line emphasizes superior flow.
Cross-references 7C3Z5230B and 7C3Z5230EA for the same application. See all 2.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker Quiet-Flow SS Muffler for Super Duty Trucks
Walker Quiet-Flow SS Muffler Part Number 21725 is a specific-fit exhaust muffler built for 2008-2010 Ford F-250 Super Duty and 2008-2010 Ford F-350 Super Duty applications. It uses 100% stainless-steel construction for the body and is engineered for OE-style sound with a precision fit and smooth exhaust flow.
Key Features
- Specific-fit exhaust muffler for confirmed Ford Super Duty applications
- 100% stainless-steel body construction
- Quiet-Flow SS product line with OE-style sound characteristics
- Oval muffler body with reflection-style muffler design
- Offset inlet and offset outlet pipe connections
- 2.625-inch inlet inside diameter and 3-inch outlet inside diameter
- Overall length: 32.5 inches; body length: 26 inches
- Body dimensions: 7-inch width and 9-inch height
Product Details
Walker Quiet-Flow SS Part Number 21725 is part of Walker’s Quiet-Flow SS line, a stainless-steel muffler family focused on direct-fit replacement, controlled exhaust tone, and consistent flow characteristics. This muffler is shaped as an oval unit with a single inlet and single outlet, using pipe connection ends and an offset configuration to match the listed Ford Super Duty exhaust applications. It is a practical choice for drivers looking to restore exhaust function on a Ford F-250 Super Duty or Ford F-350 Super Duty while maintaining an OE-style sound profile.
This part cross-references Ford service numbers 7C3Z5230B and 7C3Z5230EA for the same application.
Common Exhaust Issues It Can Address
- Exhaust noise from a worn or damaged muffler
- Reduced exhaust flow caused by internal muffler deterioration
- Corrosion-related replacement needs on aging exhaust systems
- Fitment problems when replacing a factory-style muffler on Super Duty trucks
- Unwanted exhaust tone changes after muffler failure
Installation Notes and Fitment
Fits 2008-2010 Ford F-250 Super Duty, N/A. Fits 2008-2010 Ford F-350 Super Duty, N/A. Confirm inlet and outlet sizing, offset configuration, and overall length against the existing exhaust layout before installation. This muffler is not reversible and is not tunable, so orientation should match the vehicle’s exhaust routing.
Quality Assurance
Walker Quiet-Flow SS mufflers are built with stainless-steel construction and are positioned by the manufacturer as a precision-fit replacement with OE-style sound characteristics. Part Number 21725 is listed for the specified Ford Super Duty applications and is backed by the fitment data provided for 2008-2010 models.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Ford | F-250 Super Duty | 5.4L | V8 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2010 | Ford | F-250 Super Duty | 6.8L | V10 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2010 | Ford | F-350 Super Duty | 5.4L | V8 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2010 | Ford | F-350 Super Duty | 6.8L | V10 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2009 | Ford | F-250 Super Duty | 5.4L | V8 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2009 | Ford | F-250 Super Duty | 6.8L | V10 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2009 | Ford | F-350 Super Duty | 5.4L | V8 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2009 | Ford | F-350 Super Duty | 6.8L | V10 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2008 | Ford | F-250 Super Duty | 5.4L | V8 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2008 | Ford | F-250 Super Duty | 6.8L | V10 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2008 | Ford | F-350 Super Duty | 5.4L | V8 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
| 2008 | Ford | F-350 Super Duty | 6.8L | V10 | N/A | Premium; with 2 Catalytic Converter; Limited Lifetime Warranty; Quiet-Flow SS |
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