Wix Filters 33340 Fuel Filter

The Wix Filters 33340 Fuel Filter is a spin-on, full-flow diesel filtration element that protects injectors, fuel pumps, and engine components from dirt, rust, and water intrusion in heavy-duty diesel systems. It uses Enhanced Cellulose filtration media with a nominal 10 micron rating and supports a maximum flow of 12-15 GPM, while withstanding up to 325 PSI burst pressure. Its compact form measures 6.987 inches in height and 3.674 inches in outer diameter, with a 1-14 thread and gasket dimensions of 2.834 inches outside and 2.462 inches inside, enabling easy spin-on mounting. The filter is commonly installed in trucks, construction equipment, and industrial engines, including International Harvester, Galion, Hough, and Transicold diesel systems, and is cross-referenced to NAPA Gold 3340; common replacements include Fleetguard FF192, Donaldson P553854, and FRAM P1104. It provides fuel contaminant and water removal to protect injectors and maintain reliable fuel delivery for heavy-duty diesel applications.