Fitment: Nitrogen Oxide NOx Sensor Inlet Compatible with: 2012-2022 Freightliner Cascadia, 2016-2022 Western Star Detroit DD13 DD15 DD16 Engine Replace Number: A0101532228, 5WK97338A, 0101532228, 5WK9 7338A, A0101532228 OE Standard: Engineered to OE standards, our nitrogen oxide sensors use premium materials and exceptional craftsmanship. Each nox sensor undergoes rigorous quality testing for reliable performance. Easy to replace, they ensure your vehicle runs smoothly. Accurate Measurement: USTAR nitrogen oxygen sensors precisely monitors engine emissions with a fast response, aiding the control system in reducing tailpipe emissions and optimizing fuel supply for improved combustion. Enhance your driving experience with this reliable helper. Notice: Please confirm with your engineer in advance to ensure the PART NUMBER IS COMPATIBLE WITH YOUR TRUCK (is the same as your current NOx part/OEM number). Part Number: 5WK97338A, A0101532228, 0101532228. Compatible with Mercedes-Benz DDE Detroit Diesel DD13 DD15 DD16, Freightliner Cascadia 2012-2022, Western Star 2016-2022. Notice: Please confirm with your engineer in advance to ensure the PART NUMBER IS COMPATIBLE WITH YOUR TRUCK (is the same as your current NOx part/OE number).