WIX 33958 Heavy Duty Diesel Fuel Filter Assembly

Description:

The WIX 33958 Fuel Filter is used in heavy-duty diesel fuel delivery systems for filtering contaminants and protecting injectors, fuel pumps, and engine components from dirt, rust, and fuel impurities. Commonly installed in commercial trucks, industrial diesel engines, construction equipment, and heavy-duty fleet vehicles requiring spin-on fuel filtration. Maintenance teams, diesel technicians, and fleet service facilities use this fuel filter for preventive maintenance, fuel system servicing, and replacement of contaminated or restricted diesel fuel filters.

Applications:

The WIX 33958 fuel filter is widely used in heavy-duty diesel environments requiring dependable fuel filtration for injector protection and reliable engine performance. It is commonly integrated into commercial fleet trucks, industrial power units, construction machinery, mining equipment, and diesel-powered processing systems where clean fuel delivery is critical for maintaining injector efficiency, reducing fuel system wear, improving fuel economy, and extending engine service life. The spin-on design supports simplified maintenance and efficient contaminant removal in demanding industrial and fleet applications.

Technical Specifications:

• Brand: WIX
• Part Number: 33958
• Product Type: Fuel Filter
• Filter Style: Spin-On Fuel Filter
• Compatible Fuel Type: Diesel
• Filtration Media: Cellulose
• Nominal Micron Rating: 19 Micron
• Beta Ratio: 2/20 = 6/30
• Height: 8.957 Inches (227.5 mm)
• Outer Diameter: 4.658 Inches (118 mm)
• Thread Size: 1 1/4-12
• Burst Pressure: 370 PSI
• Maximum Flow Rate: 180 GPH
• Bypass Valve: No
• Anti-Drain Valve: No
• Anti-Siphon Valve: No
• Application Type: Heavy-Duty Diesel Fuel Filtration
• Installation Type: Spin-On Mounting
• Function: Fuel Contaminant Removal and Injector Protection
• Industry Applications: Fleet Maintenance, Construction, Industrial Equipment, Mining
• Cross Reference: NAPA Gold 3958
• OEM References: AC Delco TP958F, Fleetguard FF5036, Donaldson P550958

Common Replacements:

• Baldwin BF784
• Fleetguard FF5036
• Donaldson P550958