/live/media/WK/WK_18900_Fro.jpg)
OE Quality
60-Day Returns
WalkerPart #: 18900
Walker 18900 Exhaust Muffler
⚙️ 8 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$88.25Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦SoundFX Direct Fit
🚗Fitment: Oldsmobile and Pontiac, Montana, Silhouette, and Trans Sport
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Exhaust Muffler options
Walker 18900 Exhaust Muffler
| Brand | Walker |
| Part Number | 18900 |
| Position | SoundFX Direct Fit |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Body Width | 8.813 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 2.25 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 33.25 |
| Body Height | 4.25 |
| Body Length | 28 |
| Body Material | Steel |
| Finish | Aluminized |
| Inlet 1 Type | 2 bolt welded flange |
| Inlet Configuration | Offset |
| Inlet Offset | 2.625 |
| Inlet Type | 2 bolt welded flange |
| Muffler Type | Combination |
| Outlet 1 Inside Diameter | 2.25 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Center |
| Outlet Type | Pipe connection |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2001 | Pontiac | Montana | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 2000 | Pontiac | Montana | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1999 | Oldsmobile | Silhouette | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1999 | Pontiac | Montana | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1998 | Oldsmobile | Silhouette | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1998 | Pontiac | Trans Sport | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1997 | Oldsmobile | Silhouette | 3.4L | V6 | 112.0" | N/A | If welded assembly, replace all required parts; SoundFX Direct Fit |
| 1997 | Pontiac | Trans Sport | 3.4L | V6 | 112.0" | 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:
700341
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.