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John Deere NOx Sensor

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John Deere NOx sensor products

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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.

Common John Deere OE NOx sensor numbers and applications

The exact NOx sensor required for a John Deere engine can vary by model year, engine configuration, and emissions system. Use the OE number and vehicle application to confirm fitment before ordering.

  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.

Available John Deere Nox Sensor products

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Brand NOx Sensor Technical Reference

This diagram supports John Deere engine NOx sensor sourcing by summarizing SCR monitoring, connector fitment, and part number verification points.

John Deere NOx sensor technical diagram showing SCR monitoring and part number verification
John Deere NOx sensor diagram showing SCR monitoring location and part number verification notes.
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