Wix 33379 Fuel Water Separator Filter

Fuel Water Separator for Heavy-Duty Diesel Service

The Wix 33379 fuel water separator filter is built for heavy-duty fuel systems that need clean fuel and effective water removal. It uses enhanced cellulose media to capture contaminants while supporting reliable flow in demanding diesel applications.

Compatible With 1989-1993 Dodge D250, D350, W250, and W350 applications, this spin-on fuel/water separator is a direct service part for trucks that rely on consistent fuel filtration. The Wix 33379 is also cross-referenced to Baldwin BF1232 for the same application.

Key Features

• Enhanced cellulose media for contaminant holding capacity
• 14 micron filtration rating for fine particle capture
• Spin-on fuel/water separator style
• 16 x 1.5 mm thread size
• Closed inner diameter top
• Corrosion-resistant can, center tube, and end caps
• Burst pressure rating of 285

Detailed Product Overview

Wix part number 33379 is a heavy-duty fuel water separator filter engineered for diesel fuel systems where water separation and particulate control are critical. Its enhanced cellulose media is paired with durable sealing components and a corrosion-resistant housing to support leak-resistant operation in service environments. With a 14 micron rating and spin-on design, it serves as a practical replacement for trucks that need dependable fuel filtration, including 1989-1993 Dodge D250, D350, W250, and W350 models.

Common Issues This Filter Helps Address

• Water contamination in diesel fuel
• Excess dirt and debris reaching the fuel system
• Restricted fuel flow from a loaded filter
• Fuel system wear caused by contaminated fuel
• Service interruptions from poor fuel-water separation

Installation Notes and Tips

Verify thread size, sealing surface, and housing style before installation. Prime and inspect the filter during service, and follow the vehicle manufacturer’s fuel system bleeding procedure after replacement. If the application uses a drain port or self-venting drain valve on the housing, service it according to the system design.

Quality Assurance

Wix designs its HD fuel water separator filters with corrosion-resistant construction, strong sealing components, and media selected for contaminant holding capacity and water removal performance. The 33379 is built for long service life in heavy-duty diesel use.