FITMENT
Compatible with Mercedes-Benz and related heavy-duty diesel platforms equipped with SCR (Selective Catalytic Reduction) AdBlue systems requiring NOx monitoring.
Common applications include:

• Mercedes-Benz Actros / Axor / Atego (Euro 5 / Euro 6 variants depending on calibration)
• Freightliner trucks using Mercedes diesel SCR systems
• Detroit Diesel / Daimler commercial emission platforms (SCR equipped)
  Using reference numbers:
• 5WK96757
• A2C89789800-01
• 55498412 (OEM cross reference used in GM/Daimler listings in some catalogs)

Designed for exhaust aftertreatment systems to measure NOx levels and ensure proper AdBlue dosing for emissions compliance.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends real-time data to the ECU to control AdBlue/DEF injection and reduce emissions.

Q2: Where is it installed?
A2: It is installed in the SCR exhaust system, typically before or after the catalytic converter depending on vehicle configuration.

Q3: What are symptoms of failure?
A3: Check engine light, SCR/AdBlue system warnings, NOx sensor fault codes, reduced engine performance, or limp mode activation.

Q4: Is 5WK96757 the same as A2C89789800-01?
A4: Yes, 5WK96757 is the sensor manufacturer number and A2C89789800-01 is the OEM/reference number for the same SCR NOx sensor unit.