Description
Fleetguard FS19947 is a cartridge-style fuel/water separator element for International / Navistar mid-range diesel engines, replacing Navistar 1873917C91 and 1878042C91 / C92 / C93. It drops into the OEM separator housing on DT466E and MaxxForce DT applications and provides ~99.5% free-water removal and ~98% emulsified-water removal. Cellulose media, 5.54 in tall, 3.28 in OD.
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | FS19947 |
| Part Type | Cartridge Fuel/Water Separator |
| Engine Compatibility | Navistar DT466E, MaxxForce DT |
| Overall Height | 5.54 in (~140.7 mm) |
| Outer Diameter | 3.28 in (~83.3 mm) |
| Largest-end Inner Diameter | 1.14 in (~29 mm) |
| Bypass Valve | No |
| Free Water Removal | ~99.5% |
| Emulsified Water Removal | ~98% |
Cross References
This fuel/water separator replaces or is equivalent to the following part numbers:
- Navistar / International: 1873917C91, 1878042C91, 1878042C92, 1878042C93
- IHC / International Harvester: 32723C91
- Baldwin: PF7978
- Donaldson: P550824
- Fram: CS10648
- Luber-Finer: L5086F
- NAPA: 600149
Applications
This cartridge fuel/water separator fits the following engines:
- Navistar DT466E 7.6L (mid-1990s–2003)
- Navistar MaxxForce DT 7.6L (2007–2010)
Representative vehicles using these engines:
- International 4300, 4400, 7400 (DT466E / MaxxForce DT)
- International DuraStar, WorkStar (MaxxForce DT)
- IC Bus / school bus chassis with DT466E or MaxxForce DT
Verify your fuel/water separator housing accepts a cartridge element (not a spin-on) and check the OEM reference number printed on the housing before ordering.









