OE Quality
60-Day Returns

Wix 33689 Fuel Filter
Reliable Fuel Filtration for Buick, Oldsmobile, and Pontiac Vehicles
The Wix 33689 fuel filter is designed to provide consistent fuel filtration for select Buick, Oldsmobile, and Pontiac models. Engineered to meet the demands of light-duty applications, this fuel filter helps maintain engine performance by effectively removing contaminants from the fuel system.
- Class W fuel filter suitable for light-duty use
- Complete in-line fuel filter style with 3/8 inch inlet and outlet
- Cellulose media material with 7 micron filtration rating
- Dimensions: 6.73 inches height, 2.22 inches outer diameter top and bottom
- Compatible with Buick Rendezvous, Pontiac Aztek, Montana, and Oldsmobile Silhouette
Technical Specifications and Features
The Wix 33689 fuel filter features a cellulose media material that provides a 7 micron filtration rating, effectively capturing fine particles to protect your fuel system. Its complete in-line style design includes both 3/8 inch inlet and outlet ports, ensuring a secure and proper fit within the fuel line. The filter measures 6.73 inches in height with an outer diameter of 2.22 inches on both the top and bottom, making it compatible with specific GM models. The inner diameter at the top is closed, which is typical for this filter style, and it is classified as a Class W filter designed for light-duty (Ld) applications.
Compatible Vehicles and Applications
This Wix fuel filter is compatible with several GM vehicles, including Buick Rendezvous, Pontiac Aztek, Pontiac Montana, and Oldsmobile Silhouette. It is intended for use in fuel delivery systems where maintaining clean fuel flow is critical to engine operation and longevity.
- Prevents fuel contamination in Buick Rendezvous and Pontiac Aztek
- Maintains fuel system integrity in Pontiac Montana and Oldsmobile Silhouette
- Helps reduce engine performance issues related to fuel impurities
- Supports smooth fuel flow and combustion efficiency
Installation Notes and Tips
When installing the Wix 33689 fuel filter, ensure the vehicle is parked on a level surface and the engine is cool. Relieve fuel system pressure before removal of the old filter. Confirm the inlet and outlet ports align correctly with the fuel lines, both sized at 3/8 inch. Properly secure all connections to prevent leaks. Dispose of the old filter according to local regulations.
Quality Assurance and Warranty
Wix filters are manufactured to meet industry standards for fuel filtration. The 33689 fuel filter undergoes rigorous quality control to ensure consistent performance. While specific warranty details may vary, Wix typically offers coverage against defects in materials and workmanship. Refer to Wix documentation for exact warranty terms.
| Brand | Wix |
| Part Number | 33689 |
| Class | W |
| Duty Type | LD |
| Height | 6.730 |
| Inlet | 3/8 |
| Inner Diameter Top | Closed |
| Media Material | Cellulose |
| Micron | 7.00 |
| Outer Diameter Bottom | 2.220 |
| Outer Diameter Top | 2.220 |
| Outlet | 3/8 |
| Style | Fuel (Complete In-Line) Filter |
This part fits 13 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Buick | Rendezvous | 3.4L | V6 | N/A | |
| 2005 | Buick | Rendezvous | 3.6L | V6 | N/A | |
| 2005 | Pontiac | Aztek | 3.4L | V6 | N/A | |
| 2005 | Pontiac | Montana | 3.4L | V6 | N/A | |
| 2005 | Pontiac | Montana | 3.5L | V6 | N/A | |
| 2004 | Buick | Rendezvous | 3.4L | V6 | N/A | with Two Male Ends |
| 2004 | Buick | Rendezvous | 3.6L | V6 | N/A | with Two Male Ends |
| 2004 | Oldsmobile | Silhouette | 3.4L | V6 | N/A | |
| 2004 | Pontiac | Aztek | 3.4L | V6 | N/A | with Two Male Ends |
| 2004 | Pontiac | Montana | 3.4L | V6 | N/A | |
| 2003 | Buick | Rendezvous | 3.4L | V6 | N/A | with Two Male Ends |
| 2003 | Oldsmobile | Silhouette | 3.4L | V6 | N/A | with Two Male Ends |
| 2003 | Pontiac | Montana | 3.4L | V6 | N/A | with Two Male Ends |
* 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.