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This is the Wix Filters part number 33411, a heavy-duty spin-on Fuel/Water Separator Filter designed to protect diesel fuel systems by removing both water and contaminants before fuel reaches the engine. It’s a complete unit with an integrated drain (drain cock) for purging water, making it especially suitable for Racor systems that require a spin-on style filter with water drain. It can also replace part numbers 33231 or 33232 under those same systems. OE replacement units with sensor port needs are met by other Wix models (33184 or 33611) if needed.
Constructed with enhanced cellulose media treated for durability, this filter has a nominal micron rating of 14, offering efficient particulate retention. The canister shell is rugged and corrosion resistant, thread size is 1-14 inch, gasket outer diameter is approximately 108 mm with inner diameters around 91 mm and 81 mm for sealing surfaces. Height is about 5.791 in (147 mm), outer diameter is about 4.263 in (108 mm). All seals, including gasket and drain plug, are included.
Real‐world benefits include extended service life, superior fuel system protection under heavy-duty or commercial use, and reduced risk of injector damage or system failure due to water or particulates. The built-in water drain allows easy maintenance without removing the unit. Ideal for applications requiring a primary fuel/water separator where fuel cleanliness is critical.