Donaldson P551838 Fuel Filter/Water Separator, Screw-in Type, Compatible with Cummins QSX15
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| Outer Diameter | 109 millimeters |
| Thread Size | 1-14 UN |
| Length | 128 mm |
| Gasket Outside Diameter | 102.1 mm |
| Gasket Inner Diameter | 91.2 millimeters |
| Filter Bolt Thread | 3 1/8-10 UN |
| Filter Efficiency | 90% @ 30 microns |
| Emulsion Water Separation Efficiency | 95% |
| Style | Flanged |
| Product Type | Oil-Water Separator |
| Flow Direction | Outside-In |
| Filter Material Type | High-Efficiency Medium |
Manufacturer No.
P551838P550913
OEM Part No.
2101730520879806164009Z00C20539578
Engine Part No.
Cummins QSX15Volvo D seriesMack MP7Mack MP8
Interchange No.
FS19966BF1386-O33995399586995LFF3358PS10678WK10006ZP903273KC491DWS1011321380475742099834621764964
Fitment Vehicles
Renault TrucksVolvo TrucksMack Trucks
Filter and Oil - Industrial Encyclopedia
Donaldson P551838 screw-in type fuel filter/water separator, using high-efficiency filtering medium, effectively removes particle contaminants from fuel and separates moisture, protecting the injector and fuel pump, and extending engine life. Compatible with Cummins QSX15, Volvo D Series, Mack MP7/MP8 and other heavy-duty diesel engines. Original cross-reference numbers include 20879806, Mack 21017305, etc. Widely used in heavy trucks, construction machinery and industrial equipment, ensuring clean and efficient fuel system.