Keep contaminants out of your fuel system with the WIX Fuel Filter 33943, a heavy-duty cartridge-style metal canister filter that traps dirt and particulates before they reach the engine's fuel system. It's cataloged as a direct-fit replacement for a broad range of listed applications, including the 1962-1963 American Motors Classic, 1966 American Motors Rebel, and many International medium and heavy trucks (100, 1000B/C/D, 1010, 1100B/C/D, 1110, 1200B/C/D and more) across engines such as L4-2.5L, L4-3.2L, L6-3.2L, L6-4.3L, V8-4.1L, V8-4.3L, V8-4.4L, V8-4.7L, V8-5.0L, V8-5.3L, V8-5.6L, V8-5.7L, V8-6.4L, and V8-6.6L. See the Buyer's Guide tab for the full list of 175 applications.
- Heavy-duty application: WIX HD fuel filters use high-efficiency media selected for medium and heavy trucks plus farm, construction, mining and other equipment.
- Cellulose media, 19 micron: filters fuel at a 19-micron rating to help strain out harmful particles.
- Durable build: high-strength, corrosion-resistant can, center tube and end caps with sealing components designed to resist leaks under varied operating conditions.
- Service interval: recommended for OEM fuel filter change intervals.
Cartridge dimensions: 1.890 in height with a 1.371 in outer diameter. Country of origin: United States. Manufacturer part number 33943.
Frequently Asked Questions
What does the WIX 33943 fuel filter do?
It strains dirt and particulate contaminants out of the fuel before it reaches the engine's fuel system, helping protect downstream fuel components.
Will this filter fit my vehicle?
It's cataloged for 175 applications, including the 1962-1963 AMC Classic and many International trucks across L6-3.2L, V8-4.3L, V8-5.0L and other engines. Check the Buyer's Guide tab to confirm your vehicle.
What type of filter media does it use?
It uses cellulose media with a 19-micron rating, the high-efficiency HD media WIX selects for medium and heavy trucks and equipment applications.
How often should this fuel filter be replaced?
WIX recommends servicing it at the OEM fuel filter change intervals for your vehicle or equipment. Consult your service information for the exact schedule.
What are signs this fuel filter may need replacing?
Hard starting, hesitation, loss of power, or stalling can be signs a fuel filter is clogged. Diagnose the cause first, since these symptoms can have other sources.
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