Description
Fleetguard FS19931 spin-on fuel/water separator, the drain-only variant of FS19547. Built on StrataPore media with a 1-14 UNF-2B mounting thread, 10-micron rating (SAE J1985), and 95% emulsified water separation. Racor R43-format filter widely used on medium-duty Navistar/International, Mack, Hino, and Case IH engines, plus Carrier transport refrigeration units.
Specifications
| Manufacturer | Fleetguard |
|---|---|
| Part Number | FS19931 |
| Part Type | Spin-On Fuel/Water Separator (Drain-Only) |
| Thread Size | 1-14 UNF-2B |
| Length | 6.74 in |
| Largest OD | 4.24 in |
| Gasket OD | 3.94 in |
| Gasket ID | 3.56 in |
| Micron Rating (SAE J1985) | 10 |
| Efficiency, TWA (SAE J1985) | 98.7% |
| Free Water Separation | 95% |
| Emulsified Water Separation | 95% |
| Standpipe | No |
Cross References
This filter replaces or is equivalent to the following part numbers:
- Racor: R43-format (10-micron)
- Mack: 3076PS8187, 3076PS8186, 3076PS7170, 3076PS7171, 5839FF5301
- Navistar / International (IHC): 1618385C91, 1618386C91, 1618386C92, 1685359C91, 1697197C1
- Case IH: 87802929, 87803210, 1677004C91
- Hino: 234011630, 234011440L, 234021440, S234011440
- New Holland: 6933130
- Carrier: 300109004, 21300109004
Applications
This fuel/water separator fits medium-duty truck and equipment engines, including:
- Navistar / International DT-series medium-duty diesel engines
- Mack mid-range diesel engines
- Hino J/W-series medium-duty diesel engines
- Case IH and New Holland agricultural / construction equipment
- Carrier transport refrigeration units
Verify your engine serial number, fuel-system configuration, and whether your application calls for the drain-only FS19931 or sensor-equipped FS19547 variant before ordering.









