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Walker 21354 Exhaust Muffler
| Brand | Walker 21354 |
|---|---|
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2 |
| Body Width | 8.813 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 2 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 19 |
| Body Height | 4.25 |
| Body Length | 16 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 2.625 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Inside Diameter | 2 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Offset |
| Outlet Type | Pipe connection |
| Product line | Quiet-Flow SS |
| Fits | Ford · 8 vehicles |
100% stainless steel. Corrosion-resistant construction for long service life.
Precision fit. OE-style replacement with a straightforward installation.
OE-style sound. Delivers a refined exhaust note without harshness.
Cross-references National 2065 for the same application. See all 1.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker Quiet-Flow SS Muffler for Mustang
Walker Quiet-Flow SS muffler part number 21354 is a specific-fit exhaust muffler built for 1998-2004 Ford Mustang applications. It uses 100% stainless-steel construction for the body and is shaped as an oval muffler with offset pipe connections for a direct replacement-style fit.
Key Features
- Specific-fit exhaust muffler for 1998-2004 Ford Mustang
- 100% stainless-steel body construction
- Oval muffler shape with combination muffler design
- 2-inch inlet and 2-inch outlet with pipe connections
- Offset inlet and outlet configuration
- Overall length: 19 inches
- Body dimensions: 16-inch length, 8.813-inch width, 4.25-inch height
- Aluminized finish
Product Details
The Walker Quiet-Flow SS line is built for drivers who want an OE-style exhaust sound with precise fitment and efficient flow characteristics. This Walker 21354 muffler is engineered for the 1998-2004 Ford Mustang, making it a direct replacement choice for Mustang exhaust service where the original muffler needs to be replaced with a stainless-steel unit. The offset inlet and outlet layout, along with the 2-inch pipe connections, supports a factory-style installation path on the listed vehicle application.
This part cross-references National 2065 for the same application.
Common Issues It Can Address
- Rust or corrosion in the original muffler body
- Exhaust noise from a damaged or leaking muffler
- Restricted exhaust flow caused by internal deterioration
- Fitment problems when replacing a worn factory-style muffler
- Need for a direct replacement on a 1998-2004 Ford Mustang exhaust system
Installation Notes and Tips
Fits 1998-2004 Ford Mustang, N/A. Verify inlet and outlet diameter, offset configuration, and overall length before installation. If the welded assembly is being serviced, replace all required parts in the exhaust system as needed to maintain proper alignment and sealing. Confirm the vehicle’s exhaust routing matches the listed pipe-connection layout before final fitment.
Quality Assurance
Walker positions Quiet-Flow SS mufflers as stainless-steel replacement components with precision fit and OE-style sound characteristics. Part number 21354 is built for the listed Mustang application and follows the Quiet-Flow SS product line’s focus on fit, flow, and factory-like exhaust tone.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Ford | Mustang | 3.9L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2001 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2000 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 1999 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 1998 | Ford | Mustang | 3.8L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
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