Description
Fleetguard FF5776 spin-on secondary fuel filter for Cummins ISX, ISX11.9, ISX15, and QSX engines, replacing Cummins 2864993 and 2893612. Heavy-wall steel housing with an M90 x 2.0 mounting thread protects high-pressure common-rail injectors from particulate. The FF5825NN NanoNet upgrade and the newer FF5971NN are interchangeable on the same mount with extended-service media.
Signs You Need a New Fuel Filter
- Loss of power under load or extended cranking on start-up
- Engine surging, hesitation, or rough idle
- Visible smoke from the exhaust under load
- Fuel-restriction or low-suction-pressure fault codes
Specifications
| Manufacturer | Fleetguard |
|---|---|
| Part Number | FF5776 |
| Part Type | Secondary fuel filter, spin-on |
| Engine Compatibility | Cummins ISX, ISX11.9, ISX15, QSX |
| Thread | M90 x 2.0 |
| Overall Height | 224.6 mm (8.84 in) |
| Outer Diameter | 119.9 mm (4.72 in) |
Cross References
This part replaces or is equivalent to the following part numbers:
- Cummins: 2864993, 2893612, 3685306, 4331007
- Baldwin: BF9885
- Donaldson: P555776
- WIX: WF10123
- Hastings: FF1219
- Luber-finer: LFF6776
- Mann-Filter: WK 12003
- Fleetguard (related): FF5825NN (NanoNet upgrade), FF5971NN (post-2020 X15 extended-service)
Applications
This filter fits the following Cummins engines:
- Cummins ISX / ISX15 (15.0L, 2002–2016)
- Cummins ISX11.9 (11.9L, 2010–2016)
- Cummins QSX / QSX11.9 / QSX15 industrial
Representative vehicles using these engines:
- Freightliner Cascadia, Columbia, Coronado (Cummins ISX, 2007–2016)
- Kenworth T660, T680, T800, T880, W900 (Cummins ISX, 2007–2016)
- Peterbilt 386, 387, 389, 579, 587 (Cummins ISX, 2007–2016)
- International ProStar, LoneStar (Cummins ISX option, 2008–2016)
- Western Star 4900, 5700 (Cummins ISX option, 2008–2016)
For 2020+ X15/X12 engines, see the FF5825NN.
Verify your engine serial number and configuration before ordering to confirm fitment.
