FITMENT:
Compatible with John Deere tractors and agricultural machinery equipped with SCR (AdBlue/DEF) emission systems, including:

• 7R Series: 7230R, 7260R, 7280R, 7310R
• 6R Series: 6150R, 6170R, 6190R, 6210R
• T660 and related agricultural platforms (SCR-equipped variants)
• Select Stage IV / Tier 4 Final John Deere engines

OEM / Cross reference numbers:

• RE552182
• 5WK9 6773 / 5WK96773 / 5WK96773A
• RE575061 (related NOx sensor family reference in Deere systems)
• RE553440 (possible supersession depending on ECU version)

FUNCTION:

• Measures nitrogen oxide (NOx) levels in diesel exhaust gases
• Sends real-time data to ECU via CAN/J1939 communication
• Controls AdBlue (DEF) dosing in SCR system
• Monitors catalyst efficiency and emissions performance
• Ensures Tier 4 / Stage IV emissions compliance
• Prevents engine derate and SCR fault conditions

INSTALLATION POSITION:

• SCR system inlet or outlet NOx sensor (depending on tractor configuration)
• Mounted on exhaust line before or after SCR catalyst
• Works in paired system (upstream + downstream NOx sensors)

IMPORTANT NOTE:
John Deere NOx sensors like RE552182 belong to a multi-application SCR sensor platform, meaning:

• Same sensor used across multiple tractor models and series
• Inlet and outlet sensors are NOT interchangeable
• ECU software and wiring determine correct function
• Calibration varies by engine and emission level

Incorrect installation may trigger SCR warning lights, AdBlue errors, or engine derate.

FAQ:

Q1: What machines does it fit?
A1: John Deere 7R (7230R–7310R), 6R (6150R–6210R), and SCR-equipped agricultural tractors.

Q2: Is it inlet or outlet sensor?
A2: It can be used as inlet or outlet depending on SCR system configuration.

Q3: What are failure symptoms?
A3: SCR warning light, NOx sensor fault codes, AdBlue system errors, engine derate.

Q4: Are RE552182 and 5WK96773 the same?
A4: Yes, 5WK96773 is the Continental OEM reference for John Deere RE552182.

Q5: Does installation require programming?
A5: Some John Deere machines require SCR reset or ECU adaptation after replacement.