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Walker 21479 Exhaust Muffler
| Brand | Walker 21479 |
|---|---|
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2 |
| Body Width | 9.75 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 2 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 23.5 |
| Body Height | 4.25 |
| Body Length | 19 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 2.875 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Inside Diameter | 2 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Center |
| Outlet Type | Pipe connection |
| Product line | Quiet-Flow SS |
| Fits | Ford · 4 vehicles |
100% stainless steel. Corrosion-resistant construction helps the muffler stand up to harsh exhaust conditions.
Precision fit. Engineered for a specific fit with OE-style sound and superior flow.
Combination muffler. Oval design balances exhaust flow and sound control in one unit.
Cross-references 2483 for the same application. See all 1.
Walker Quiet-Flow SS Muffler for Explorer Sport
Walker Quiet-Flow SS muffler part number 21479 is a specific-fit exhaust muffler built with stainless-steel body construction and an aluminized finish. It is engineered for a 2-inch inlet and 2-inch outlet, with an oval body shape and OE-style sound characteristics for select Ford Explorer Sport and Explorer applications.
Key Features
- Specific-fit exhaust muffler for select Ford applications
- 100% stainless-steel body construction
- Oval muffler shape with combination muffler design
- 2-inch inlet and 2-inch outlet pipe connections
- Offset inlet and center outlet configuration
- Overall length: 23.5 inches
- Walker Quiet-Flow SS product line for OE-style sound and precision fit
Product Details
The Walker Quiet-Flow SS line is built for drivers who want a direct-fit replacement muffler with stainless-steel construction and a factory-style sound profile. This Walker 21479 muffler uses a 2-inch inlet and 2-inch outlet, an oval body, and a specific-fit layout to match the listed exhaust applications. It is a practical choice for restoring exhaust function on a Ford Explorer Sport or Ford Explorer when the original muffler is worn, noisy, or restricted.
This part cross-references Monroe Shocks & Struts (e.g., 2483) for the same application.
Vehicle Fitment
- Fits 2003 Ford Explorer Sport, N/A; Premium; To 12/02/2002; Quiet-Flow SS
- Fits 2002 Ford Explorer Sport, N/A; Premium; From 03/04/2002 to 12/02/2002; Quiet-Flow SS
- Fits 2001 Ford Explorer Sport, N/A; Premium; Quiet-Flow SS
- Fits 2000 Ford Explorer, N/A; Premium; After 12/1999; Quiet-Flow SS
Common Uses
- Replacing a rusted or corroded muffler
- Restoring OE-style exhaust sound on a Ford Explorer Sport
- Addressing exhaust noise from a damaged internal muffler core
- Correcting restricted exhaust flow caused by an aging muffler
- Repairing a direct-fit exhaust section on a Ford Explorer
Installation Notes
Verify inlet and outlet diameter, offset, and center outlet configuration before installation. This muffler is not reversible and is not tunable, so orientation matters during exhaust system replacement. If the vehicle uses a welded assembly, replace all required parts as noted in the fitment data. Professional exhaust installation is recommended for proper alignment and sealing.
Quality Assurance
Walker Quiet-Flow SS mufflers are part of Walker’s stainless-steel muffler line, developed for precision fit, steady exhaust flow, and OE-style sound. Part number 21479 is built for the listed Ford Explorer Sport and Explorer applications and is backed by the limited lifetime warranty noted in the fitment data.
| Year | Make | Model | # Doors | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2003 | Ford | Explorer Sport | — | 4.0L | V6 | N/A | Premium; To 12/02/2002; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | Ford | Explorer Sport | — | 4.0L | V6 | N/A | From 03/04/2002 to 12/02/2002; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2001 | Ford | Explorer Sport | — | 4.0L | V6 | N/A | Premium; Limited Lifetime Warranty; Quiet-Flow SS |
| 2000 | Ford | Explorer | 2 Door | 4.0L | V6 | N/A | Premium; Limited Lifetime Warranty; After 12/1999; If welded assembly, replace all required parts; Quiet-Flow SS |
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