Part Number: A4720921705
The A4720921705 is an OEM-specification fuel filter kit engineered for the 2020-and-newer Detroit Diesel DD13, DD15, and DD16 engines. Supplied as a complete service package, it restores factory-grade fuel filtration performance with 4-micron absolute particulate capture and integrated water separation β the final line of defense before diesel reaches the high-pressure common rail system.
The Gen 5 DD-series fuel system is unforgiving of contamination. Even trace water or fine silt shortens injector life, triggers derates, and accelerates fuel pump wear. Replacing the complete A4720921705 kit β rather than reusing old seals or mixing elements β ensures the fuel module seals properly, delivers full filter surface area, and maintains the pressure stability the engineβs electronic control system expects. The result: consistent fuel economy, clean emissions performance, and fewer unscheduled visits to the shop.
Direct fit for Freightliner Cascadia (2020+), Western Star 5700XE, 49X, and 57X trucks powered by Detroit DD13, DD15, or DD16 engines. Also used on select Peterbilt chassis with Detroit power. Supersedes Detroit A4720921405 and A4720921405001. Cross-references to Fleetguard FK11011, Donaldson P582831, Baldwin PF46269 KIT, WIX WF10678, NAPA 600678, and Mahle KX46910.
| Filter type | Fuel filter / water separator kit |
|---|---|
| Engine family | Detroit Diesel DD13, DD15, DD16 (2020+) |
| Micron rating | 4 microns (absolute) |
| Overall height | 10.18 in (258 mm) |
| Largest outer diameter | 4.61 in (117 mm) |
| OEM reference | Detroit A4720921705 / A4720921405 |
This filter is an interchange replacement for the following part numbers: