FITMENT:
Compatible with Mercedes-Benz diesel vehicles equipped with SCR emission systems.
Common applications include W166, W172, W205, W221, W251, W212, W207, and Sprinter platforms (W906 / W447 depending on configuration).
OEM reference number: A0009053503.
Used in diesel exhaust aftertreatment system for NOx monitoring (AdBlue/DEF SCR system).
Installed in exhaust system (inlet or outlet position depending on configuration).
Fitment must be confirmed by OEM number and emission system setup before installation.

FAQ:

Q1: How do I confirm compatibility?
A1: Match OEM number A0009053503 with your original sensor and verify connector type, wiring length, and SCR system configuration.

Q2: Which vehicles does this fit?
A2: It is used across multiple Mercedes-Benz diesel platforms including ML/GL/GLE, C-Class, E-Class, S-Class, R-Class, SLK, and Sprinter depending on SCR system setup.

Q3: Where is this NOx sensor installed?
A3: It is installed in the SCR exhaust aftertreatment system, before or after the catalytic converter depending on vehicle configuration.

Q4: What are common failure symptoms?
A4: Engine warning light, SCR/AdBlue system fault codes, incorrect NOx readings, or reduced engine performance.

Q5: Does replacement require programming?
A5: Some vehicles require system reset or diagnostic adaptation after installation.