FITMENT:
Compatible with Mercedes-Benz heavy-duty trucks equipped with Euro 6 SCR (AdBlue/DEF) emission systems, including:

• Actros MP4 / MP5 (2011–present)
• Arocs (construction trucks)
• Antos (distribution trucks)
• Atego 3 (Euro 6 versions)
• Econic (waste/refuse trucks)
• Some Axor Euro 6 conversions

OEM / Cross reference numbers:

• 5WK96622
• A0101539328 / 0101539328
• A0081539828 / 5WK96642A (related sensor family references)

This NOx sensor is used in Mercedes SCR exhaust aftertreatment systems to monitor nitrogen oxide levels and control AdBlue dosing for emissions compliance. It is commonly used in Euro 6 heavy-duty commercial vehicles.

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FUNCTION:

• Measures NOx concentration in diesel exhaust gases
• Sends real-time data to ECU via CAN (J1939) communication
• Controls SCR/AdBlue injection for catalyst efficiency
• Ensures Euro 6 emissions compliance and prevents engine derate

INSTALLATION POSITION:

• SCR system inlet or outlet sensor (depending on engine calibration)
• Mounted before or after SCR catalyst in exhaust system
• Actros MP4 commonly uses both pre-cat and post-cat NOx sensors

IMPORTANT NOTE:
Mercedes heavy-duty NOx sensors like 5WK96622 belong to a multi-variant sensor family, meaning:

• Same physical design but different calibration versions
• Position (inlet/outlet) depends on ECU logic
• Harness length and connector can differ

Always match OEM number or VIN before ordering to avoid SCR faults.

FAQ:

Q1: Is this inlet or outlet sensor?
A1: It can be used as inlet or outlet depending on Actros/Arocs SCR system configuration.

Q2: What vehicles does it fit?
A2: Mercedes Actros MP4/MP5, Arocs, Antos, Atego Euro 6 trucks.

Q3: What are failure symptoms?
A3: SCR warning light, engine derate, AdBlue system faults, incorrect NOx readings, limp mode.

Q4: Is 5WK96622 same as A0101539328?
A4: Yes, 5WK96622 is the Continental manufacturer reference for Mercedes OEM A0101539328.

Q5: Does it require programming after installation?
A5: Some Mercedes trucks require SCR reset or ECU adaptation after replacement.