OE Quality
60-Day Returns

Walker 18309 Exhaust Muffler
Walker SoundFX Direct Fit Muffler for Nissan 300ZX
Walker SoundFX Direct Fit muffler Part Number 18309 is a specific-fit exhaust muffler for select 1984-1989 Nissan 300ZX applications. It is built with aluminized steel for improved service life and is shaped to deliver a clean OE-style appearance with controlled exhaust sound.
Key Features
- Specific-fit exhaust muffler for select Nissan 300ZX models
- Round, combination muffler design
- 100% aluminized steel construction
- Offset inlet configuration with dual offset outlets
- Mechanical interior joints and spun-locked heads for added durability
- Walker SoundFX Direct Fit line for OE-style replacement applications
Product Details
The Walker SoundFX Direct Fit line is focused on direct replacement exhaust components that match vehicle-specific fitment and provide a balanced sound profile. This Walker muffler Part Number 18309 uses a steel body with an aluminized finish, a 2.25-inch inlet inside diameter, and dual 1.875-inch outlet tips. Its round body measures 7 inches wide, 7 inches high, and 18 inches long, with an overall length of 29.25 inches. For buyers searching for a 1984-1989 Nissan 300ZX exhaust muffler, this part offers a direct-fit solution with the dimensions and outlet layout needed for the listed applications.
This part cross-references Anchor 3213 and TYC 700031 for the same application.
What It Helps Address
- Exhaust noise that has become louder due to a worn muffler
- Corrosion-related muffler replacement needs on older Nissan 300ZX exhaust systems
- Fitment issues when replacing a vehicle-specific rear exhaust muffler
- Loss of original exhaust tone or appearance after muffler failure
- Direct replacement needs for 1984-1989 Nissan 300ZX exhaust service
Installation Notes and Tips
Fits 1984-1989 Nissan 300ZX, N/A. Fits 1984-1989 Nissan 300ZX, N/A, SoundFX Direct Fit. Verify inlet and outlet orientation, overall length, and body dimensions before installation. If the vehicle uses a welded assembly, replace all required related exhaust parts as noted in the fitment data. Confirm the exhaust routing and tip configuration against the original system before final installation.
Quality Assurance
Walker uses aluminized steel construction, mechanical interior joints, and spun-locked heads to support durability in direct-fit exhaust service. The SoundFX Direct Fit line is built for vehicle-specific replacement use on applications such as the Nissan 300ZX.
| Brand | Walker |
|---|---|
| Part Number | 18309 |
| Position | SoundFX Direct Fit |
| Universal Or Specific Fit | Specific |
| Shape | Round |
| Grade Type | Regular |
| Inlet Inside Diameter | 2.25 |
| Body Width | 7 |
| Inlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 29.25 |
| Body Height | 7 |
| Body Length | 18 |
| Body Material | Steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2.25 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 1.75 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Outside Diameter | 1.875 |
| Outlet 1 Type | Tip |
| Outlet 2 Outside Diameter | 1.875 |
| Outlet Configuration | Offset |
| Outlet Outside Diameter | 1.875 |
| Outlet Quantity | 2 |
| Outlet Type | Tip |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1989 | Nissan | 300ZX | 3.0L | V6 | N/A | If welded assembly, replace all required parts; Optional Parts for Split System; SoundFX Direct Fit |
| 1989 | Nissan | 300ZX | 3.0L | V6 | N/A | SoundFX Direct Fit |
| 1988 | Nissan | 300ZX | 3.0L | V6 | N/A | If welded assembly, replace all required parts; Optional Parts for Split System; SoundFX Direct Fit |
| 1988 | Nissan | 300ZX | 3.0L | V6 | N/A | SoundFX Direct Fit |
| 1987 | Nissan | 300ZX | 3.0L | V6 | N/A | If welded assembly, replace all required parts; Optional Parts for Split System; SoundFX Direct Fit |
| 1987 | Nissan | 300ZX | 3.0L | V6 | N/A | SoundFX Direct Fit |
| 1986 | Nissan | 300ZX | 3.0L | V6 | N/A | If welded assembly, replace all required parts; Optional Parts for Split System; SoundFX Direct Fit |
| 1986 | Nissan | 300ZX | 3.0L | V6 | N/A | SoundFX Direct Fit |
| 1985 | Nissan | 300ZX | 3.0L | V6 | N/A | If welded assembly, replace all required parts; Optional Parts for Split System; SoundFX Direct Fit |
| 1985 | Nissan | 300ZX | 3.0L | V6 | N/A | SoundFX Direct Fit |
| 1984 | Nissan | 300ZX | 3.0L | V6 | N/A | If welded assembly, replace all required parts; Optional Parts for Split System; SoundFX Direct Fit |
| 1984 | Nissan | 300ZX | 3.0L | V6 | N/A | 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.