Description
OEM Fleetguard FS1098 spin-on fuel/water separator for the Cummins ISB / B6.7, ISL / L9, ISL8.9, and QSB6.7 family — the standard fuel filter on 2017+ medium-duty trucks, school buses, and construction equipment running these engines. Built by Cummins Filtration with 10-micron StrataPore media and 95% water separation; integrated WIF sensor port and drain valve. Replaces Cummins 5319680 and 5308722; cross-references Baldwin BF46160-SPS, Luber-finer LFF1098, and WIX WF10716.
Signs You Need a New Fuel/Water Separator
- Water-in-fuel warning light or sensor alarm
- Hard starting, rough idle, or white smoke at startup
- Power loss or hesitation under acceleration
- Decreased fuel economy or inconsistent performance
- Visible water or sediment when draining the bowl
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | FS1098 |
| Part Type | Spin-On Fuel/Water Separator |
| Engine Compatibility | Cummins B6.7 / ISB6.7 / QSB6.7, L9 / ISL9 / ISL8.9 |
| Media | StrataPore |
| Micron Rating | 10 µm |
| Water Separation | 95% |
| Length | 9.02 in (229 mm) |
| Largest OD | 4.72 in (120 mm) |
| Gasket OD | 4.00 in (101.6 mm) |
| Thread | Buttress, 119 mm dia, 4.0 mm pitch |
| Compatible Housings | FH21464, FH21462, FH143 |
Cross References
This separator replaces or is equivalent to the following part numbers:
- Cummins: 5319680, 5308722, 3406889
- Baldwin: BF46160-SPS
- Luber-finer: LFF1098
- WIX: WF10716
- HiFi: SN40706
- JCB: 400A0727
- Doosan: 46652911
- JLG: 70026234
- Wirtgen: 2345929, 2391355
- Sandvik: BG00359490
Applications
This separator fits the following engines:
- Cummins B6.7 / ISB6.7 / QSB6.7 (2017–present)
- Cummins L9 / ISL9 / ISL8.9 (2017–present)
Representative vehicles using these engines:
- Freightliner M2 106 / M2 112 (2017–present)
- Kenworth T180 / T270 / T280 / T370 / T380 / T480 (2017–present)
- Peterbilt 536 / 537 / 548 (2017–present)
- International MV / HV / CV Series (2017–present)
- Western Star 4700 (2017–present)
- Blue Bird, IC Bus, Thomas Built school buses with B6.7
- Construction equipment: JCB, Doosan, JLG, Wirtgen, Sandvik
Verify your engine serial and filter-housing part number before ordering to confirm fitment.
