Fitment

Fits for:

• Mercedes-Benz C-Class (W205) diesel models
• Mercedes-Benz E-Class (W212 / W213 early diesel variants depending on engine)
• Mercedes-Benz CLS (C218 / C257 diesel applications depending on SCR system)
• Mercedes-Benz S-Class (W221 / W222 selected diesel SCR versions)
• Engine: OM651 / OM642 diesel engines with SCR (AdBlue) system
• Position: Exhaust NOx sensor (before or after SCR catalyst depending on configuration)
• OE / Cross References: A0009051612 / 0009051612 / SNS3071 / SNS744 family / 5WK9-series NOx sensor platform / EA0009051612

FAQ

Q1: Are A0009051612 and SNS3071 the same sensor?
A1: Yes. A0009051612 is the Mercedes-Benz OE number, and SNS3071 is the Continental/Vitesco reference used for the same NOx sensor module in SCR diesel systems.

Q2: What vehicles use this sensor?
A2: It is commonly used on Mercedes-Benz C-Class, E-Class, CLS, and S-Class diesel models equipped with OM651 and OM642 engines using SCR (AdBlue) emissions systems.

Q3: Is this inlet or outlet sensor?
A3: It can be used as inlet or outlet NOx sensor depending on exhaust layout. Many Mercedes diesel systems use the same sensor type in multiple positions with different harness lengths.

Q4: What does this sensor do?
A4: It measures nitrogen oxide (NOx) levels in the exhaust gas and sends data to the ECU to control AdBlue dosing, ensuring emissions compliance and SCR efficiency.