Description
The Fleetguard FF5971NN is a spin-on fuel filter built on Cummins Filtration NanoNet media, designed for 2020 and newer Cummins X15 and X12 engines (EPA 2017 and EPA 2021 emission ratings). Fleetguard is the OE filter supplier to Cummins, and the FF5971NN is the direct service replacement for Cummins 5575143. It is backwards-compatible with the earlier FF5825NN.
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | FF5971NN |
| Part Type | Spin-On Fuel Filter |
| Media | NanoNet |
| Engine Compatibility | Cummins X15, X12 (2020+) |
| Supersedes | FF5825NN |
Cross References
This filter replaces or is equivalent to the following part numbers:
- Cummins: 5575143
- Fleetguard: FF5825NN (superseded by FF5971NN)
- Baldwin: BF46248
Applications
This fuel filter fits the following engines:
- Cummins X15 14.9L (2020+)
- Cummins X12 11.8L (2020+)
Representative vehicles using these engines:
- Kenworth T680, T880, W900 (2020+)
- Peterbilt 579, 567, 389 (2020+)
- Freightliner Cascadia (2020+ with Cummins X15)
- Western Star 5700, 49X (2020+)
- International LT, RH, HX (2020+ with Cummins)
Verify your engine serial number and emission certification (EPA17, EPA21) before ordering. Pre-2020 X15/ISX15 engines use a different fuel filter.









