John Deere is a leading manufacturer of agricultural, construction, and forestry machinery, as well as diesel engines and lawn care equipment. In their diesel engines, they use NOx (Nitrogen Oxides) sensors to monitor and control the emissions of harmful nitrogen oxides. These sensors are essential for meeting strict emission regulations and ensuring optimal engine performance.

The NOx sensor is a part of the Selective Catalytic Reduction (SCR) system, which reduces NOx emissions by injecting a urea-based solution (Diesel Exhaust Fluid or DEF) into the exhaust stream. The NOx sensor measures the concentration of NOx in the exhaust gases before and after the SCR catalyst, allowing the engine control unit (ECU) to adjust the amount of DEF injected to achieve the desired reduction in NOx emissions.

John Deere Original Equipment (OE) NOx sensors are designed and manufactured to meet the specific requirements of John Deere engines. These sensors are built to provide accurate and reliable measurements, ensuring optimal engine performance and compliance with emission regulations.

Here is a list of some John Deere Original Equipment (OE) NOx sensors, their corresponding part numbers, and the engine models they are commonly used in. Please note that this is not an exhaustive list, and the specific NOx sensor required for your John Deere engine may vary depending on the model and year.

  1. RE546783 – NOx Sensor (Pre-SCR)
    • Commonly used in: John Deere 9.0L and 13.5L engines
  2. RE546784 – NOx Sensor (Post-SCR)
    • Commonly used in: John Deere 9.0L and 13.5L engines
  3. RE555326 – NOx Sensor (Pre-SCR)
    • Commonly used in: John Deere 4.5L and 6.8L engines
  4. RE555327 – NOx Sensor (Post-SCR)
    • Commonly used in: John Deere 4.5L and 6.8L engines
  5. RE568454 – NOx Sensor (Pre-SCR)
    • Commonly used in: John Deere 2.9L and 3.1L engines
  6. RE568455 – NOx Sensor (Post-SCR)
    • Commonly used in: John Deere 2.9L and 3.1L engines
  1. RE549846 – NOx Sensor (Pre-SCR)
    • Commonly used in: John Deere 6.8L and 9.0L engines
  2. RE549847 – NOx Sensor (Post-SCR)
    • Commonly used in: John Deere 6.8L and 9.0L engines
  3. RE560091 – NOx Sensor (Pre-SCR)
    • Commonly used in: John Deere 4.5L engines
  4. RE560092 – NOx Sensor (Post-SCR)
    • Commonly used in: John Deere 4.5L engines
  5. RE561066 – NOx Sensor (Pre-SCR)
    • Commonly used in: John Deere 13.5L engines
  6. RE561067 – NOx Sensor (Post-SCR)
    • Commonly used in: John Deere 13.5L engines

To ensure you get the correct NOx sensor for your specific John Deere engine, consult your John Deere dealer or refer to your engine’s parts catalog. Keep in mind that the compatibility of NOx sensors with engine models may change over time due to updates and revisions in engine designs and emission regulations.