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Wix 33121 Fuel Filter - Primary
| Brand | Wix 33121 |
|---|---|
| Position | Primary |
| Burst Pressure | 245 |
| Class | Hc |
| Duty Type | Hd |
| Flow Rate | 12 gpm |
| Height | 5.189 |
| Inner Diameter Top | Closed |
| Media Material | Enhanced cellulose |
| Micron | 30.00 |
| Outer Diameter Top | 3.670 |
| Style | Spin-on fuel filter |
| Thread Size | 1-12 |
| Fits | — |
Spin-on fuel filter. Simple service design for quick, straightforward replacement.
Enhanced cellulose media. Delivers high-efficiency filtration for demanding applications.
Corrosion-resistant construction. Built with strong cans, center tubes, and end caps for leak resistance.
Cross-references ACDelco T94, ACDelco T936 and ACDelco TP936 for the same application. See all 54.
WIX 33121 Fuel Filter Overview
The WIX 33121 is a spin-on fuel filter built for heavy-duty fuel systems in trucks and equipment. It uses enhanced cellulose media with a 30 micron rating to help capture fuel contamination while maintaining a 12 GPM flow rate for demanding service.
For buyers searching for a Wix 33121 fuel filter, this part is a direct-fit style replacement for applications that use a 1-12 thread and a closed top inner diameter. It is commonly cross-referenced with NAPA Gold Filters 3121 and Baldwin BF7774 for the same application.
Key Features
- Spin-on fuel filter design for serviceable fuel system maintenance
- Enhanced cellulose media for application-specific filtration
- 30 micron filtration rating
- 12 GPM flow rate
- 1-12 thread size
- 5.189 in. height and 3.670 in. outer diameter
- 245 burst pressure rating
- High-strength, corrosion-resistant can, center tube, and end caps
Detailed Product Description
WIX engineered the 33121 for medium- and heavy-duty use in trucks, farm machinery, construction equipment, mining equipment, and other diesel or fuel-filtered systems. The filter media is selected for the application, and the sealed construction is built to resist leaks under changing operating conditions. If you are replacing a Wix 33121 fuel filter on a Ford, Caterpillar, or General Motors application, verify thread size, dimensions, and service requirements before installation.
This part is also a practical choice for fleet maintenance and OEM-style fuel filter change intervals where consistent fuel cleanliness matters. Searches for Wix 33121, WIX 33121 fuel filter, and heavy-duty spin-on fuel filter often point to this exact part number.
What It Helps Address
- Fuel contamination entering the injection or delivery system
- Restricted fuel flow caused by a loaded filter
- Premature wear from dirt and debris in diesel fuel
- Leak concerns at the filter can, tube, or end-cap sealing surfaces
- Service interruptions in trucks and off-road equipment
Installation Notes and Tips
Confirm the filter mounts with a 1-12 thread and matches the 5.189 inch height and 3.670 inch outer diameter before installation. Replace the filter at the service interval specified for the vehicle or equipment, and prime or bleed the fuel system as required by the application. For fitment-based searches, this part is used in heavy-duty Ford, Caterpillar, and General Motors applications where the listed dimensions and thread pattern match the original filter.
Quality Assurance
WIX builds this fuel filter with corrosion-resistant components and sealing materials intended to support leak-resistant operation in harsh service environments. The 33121 is specified for heavy-duty use and is recommended for OEM fuel filter change intervals.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| No rows match your filter. | ||||