Description
Cartridge-style fuel/water separator used on 6.0L Powerstroke applications and the IHC platform tied to service number 2587803C1. The Fleetguard FS19904 drops into the standard 6.0L horizontal-mount fuel/water separator housing and replaces Motorcraft FG998 / FD4597 and Ford YC3Z9365AA/AB/AC, plus the early YC3Z9176AA service spec. Also cross-listed as Mack 3076PS9111.
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | FS19904 |
| Part Type | Cartridge Fuel/Water Separator |
| Length | 4.00 in. |
Cross References
This filter replaces or is equivalent to the following part numbers:
- Motorcraft: FG998, FD4597
- Ford: YC3Z9365AC, YC3Z9365AB, YC3Z9365AA, YC3Z9176AA, 5C4Z9N184AB
- IHC / Navistar: 2587803C1
- Mack: 3076PS9111
Applications
This fuel/water separator fits:
- Ford 6.0L Powerstroke (2003-2007) — service spec FD4597
- IHC / Navistar platforms spec’d to service number 2587803C1
- Mack applications spec’d to 3076PS9111
Verify the housing style on the engine — 6.0L Powerstroke trucks built to certain calibration windows take a different cartridge spec; confirm against the OEM service number stamped on the head.









