Keep dirt and debris out of the fuel system with the Wix fuel filter 33393, a heavy-duty spin-on unit that traps contaminants before fuel reaches the engine. It fits many vehicles, among them the 1992-1998 Chevrolet W4500 Tiltmaster 3.9L and 1992-1998 GMC W4500 Forward 3.9L, as well as Isuzu, Hino and UD trucks. It also fits a wide range of off-highway equipment such as Combilift forklifts, Generac generators, and Hitachi loaders and excavators. See the "Vehicles it fits" section for the full list.
- Filtration media: enhanced cellulose media with a 10-micron rating.
- Spin-on fit: 3/4-16 thread size, 4.069 in height and 3.234 in top outer diameter.
- Heavy-duty ratings: 290 PSI burst pressure and an 8-10 GPM flow rate.
- Housing and seals: the can, center tube and end caps are high strength and corrosion resistant, paired with sealing components designed for leak resistance.
WIX HD fuel filters use high-quality, high-efficiency media chosen for the application, covering medium and heavy trucks as well as farm, construction, mining and other equipment. WIX recommends replacing them at OEM fuel filter change intervals.
Signs a fuel filter may need replacing include hard starting, hesitation or power loss under load, and stalling. If a clogged filter is the cause, this unit replaces it.
Most listed applications use one filter, while some list two; see the "Vehicles it fits" section for the quantity per application. Country of origin: United States.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What micron rating does the WIX 33393 have?
The WIX 33393 uses enhanced cellulose media with a 10-micron rating. It also carries a 290 PSI burst pressure and an 8-10 GPM flow rate.
What thread size is the WIX 33393?
It is a spin-on filter with a 3/4-16 thread size. It measures 4.069 in tall with a top outer diameter of 3.234 in.
How often should I change this fuel filter?
WIX recommends following the OEM fuel filter change interval. Check the service information for your vehicle or equipment to find the interval that applies.
How many of these filters does an application use?
Most listed applications use one filter, while some list two. Check the "Vehicles it fits" section for the quantity your vehicle or equipment uses.
What are signs a fuel filter may need replacing?
Common signs include hard starting, hesitation or power loss under load, and stalling. These symptoms can have other causes, so diagnose the fuel system before replacing the filter.
