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Walker 18399 Exhaust Muffler
Overview of Walker SoundFX Direct Fit Exhaust Muffler 18399
The Walker SoundFX Direct Fit Exhaust Muffler 18399 is designed specifically for Cadillac DeVille and Fleetwood models. This oval-shaped muffler offers a precise fit and reliable performance for your vehicle's exhaust system.
- Specific fit for Cadillac DeVille and Fleetwood
- Oval body shape with aluminized steel construction
- Inlet diameter: 2.5 inches; outlet diameter: 2.25 inches
- Offset inlet and center outlet pipe connections
- Overall length of 26.5 inches with a body length of 21 inches
Product Features and Specifications
This exhaust muffler features a combination muffler type with a single inlet and outlet, both designed for pipe connection. The inlet has an offset configuration with a 2.875-inch offset, while the outlet is centered. Constructed from aluminized steel, the muffler provides corrosion resistance and durability suitable for regular grade applications. The body dimensions include a width of 9.75 inches and a height of 4.25 inches, ensuring compatibility with the specified Cadillac models.
About the Walker SoundFX Direct Fit Product Line
The SoundFX Direct Fit line by Walker focuses on delivering mufflers that match original equipment specifications for a direct replacement. This product line emphasizes precise fitment and sound control tailored to specific vehicle models, reducing the need for modifications during installation. The 18399 muffler maintains these standards, providing a reliable exhaust solution for Cadillac DeVille and Fleetwood vehicles.
Applications and Problem Solving
- Replaces worn or damaged mufflers on Cadillac DeVille and Fleetwood
- Reduces exhaust noise and vibration for smoother operation
- Prevents exhaust leaks that can affect engine performance
- Helps maintain emissions compliance by ensuring proper exhaust flow
- Restores proper exhaust backpressure for optimal engine efficiency
Installation Notes and Tips
This muffler is designed for a specific fit and requires no reversible or tunable adjustments. The offset inlet and center outlet pipe connections should be aligned carefully to ensure a secure fit. Use appropriate tools to connect the 2.5-inch inlet and 2.25-inch outlet pipes. Verify compatibility with your Cadillac DeVille or Fleetwood before installation to avoid fitment issues.
Quality Assurance and Warranty
Manufactured with aluminized steel, the Walker SoundFX Direct Fit Exhaust Muffler 18399 offers corrosion resistance and durability for regular use. While specific warranty details are not provided, Walker products typically meet industry standards for quality and reliability, ensuring a dependable replacement part for your Cadillac exhaust system.
| Brand | Walker |
| Part Number | 18399 |
| Position | SoundFX Direct Fit |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2.5 |
| Body Width | 9.75 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 2.25 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 26.5 |
| Body Height | 4.25 |
| Body Length | 21 |
| Body Material | Steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2.5 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 2.875 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Inside Diameter | 2.25 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Center |
| Outlet Type | Pipe connection |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Drive Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1993 | Cadillac | DeVille | FWD | 4.9L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1992 | Cadillac | DeVille | FWD | 4.9L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1992 | Cadillac | Fleetwood | FWD | 4.9L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1991 | Cadillac | DeVille | FWD | 4.9L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1991 | Cadillac | Fleetwood | FWD | 4.9L | V8 | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.