Fitment

Fits for:

• Mercedes-Benz C-Class (W204 diesel variants)
• Mercedes-Benz E-Class (W212 diesel SCR systems)
• Mercedes-Benz CLS-Class (C218 diesel applications)
• Mercedes-Benz GLC / GLK diesel models (select SCR configurations)
• Engine: OM651 / OM642 diesel engines with SCR (AdBlue) system
• Position: Exhaust NOx sensor (typically post DPF / downstream SCR depending on configuration)
• OE / Cross References: A0009051412 / 0009051412 / SNS-type NOx sensor family / EA0009051412 / A2516300067

FAQ

Q1: What is A0009051412 used for?
A1: It is a NOx sensor used in Mercedes-Benz diesel vehicles with SCR (AdBlue) systems. It measures nitrogen oxide levels in the exhaust after the aftertreatment system to ensure emissions compliance.

Q2: Which vehicles use this sensor?
A2: It is commonly used on Mercedes C-Class (W204), E-Class (W212), CLS (C218), and GLC/GLK diesel models equipped with Euro 5 / Euro 6 SCR systems.

Q3: Is this inlet or outlet sensor?
A3: It is generally used as a downstream (post-particulate filter / post-treatment) NOx sensor, but exact position depends on the exhaust layout and engine version.

Q4: What does this sensor do?
A4: It measures nitrogen oxide (NOx) concentration in exhaust gases and sends real-time data to the ECU to control AdBlue dosing, reducing emissions and maintaining SCR efficiency.