Fitment
Compatible with John Deere off-highway diesel emission systems (SCR / Tier 4 Final platforms)

Equipment applications include:
John Deere 300GLC
John Deere 380GLC
John Deere 844K
John Deere 380G
Other John Deere machines using part number RE552183 / 5WK9-series NOx sensors

FAQ

Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide levels in diesel exhaust and sends data to the SCR system to control urea (DEF) injection and reduce emissions.

Q2: Where is this sensor installed?
A2: It is installed in the exhaust aftertreatment system, typically before or after the SCR catalyst depending on machine configuration.

Q3: Is part number matching required?
A3: Yes, exact OEM matching of RE552183 is required for correct fitment.

Q4: Is this used in excavators and loaders?
A4: Yes, it is commonly used in John Deere construction equipment such as excavators and wheel loaders with Tier 4 Final emission systems.

Q5: What are common failure symptoms?
A5: Engine warning light, SCR system faults, NOx sensor communication errors, or reduced engine power/derate mode.