Cummins uses NOx sensors in some of its diesel engines. The location of the NOx sensor varies depending on the engine. In some engines, the NOx sensor is located in the exhaust manifold, while in other engines, it is located in the exhaust pipe.
NOx sensors are typically made of zirconium oxide, which is a semiconductor material. When NOx is present in the exhaust gas, it reacts with the zirconium oxide, causing a change in the electrical resistance of the sensor. This change in resistance is then converted into an electrical signal that is sent to the engine computer. The engine computer uses this signal to adjust the fuel injection and air intake to reduce NOx emissions.
Here is a list of Cummins NOx sensors and the trucks that use them:
- NOx Sensor 4326874RX – Used in the following trucks:
- 2013-2019 ISX 15L
- 2013-2019 ISX 45L
- 2013-2019 ISX 55L
- NOx Sensor 5WK96751C – Used in the following trucks:
- 2013-2019 ISB 6.7L
- 2013-2019 L9 8.9L
- 2013-2019 NTA 855
- NOx Sensor 5WK96741 – Used in the following trucks:
- 2013-2019 ISB 6.7L
- 2013-2019 L9 8.9L
- 2013-2019 NTA 855
- NOx Sensor 4326862 – Used in the following trucks:
- 2013-2019 ISB 6.7L
- 2013-2019 L9 8.9L
- 2013-2019 NTA 855
Please note that this is not an exhaustive list. For more information on which Cummins trucks use NOx sensors, please consult your owner’s manual or contact a Cummins dealer.