For Benz E-Class W212 550 2011-2015 Car Lambda Sensing Unit 1 PCS O2 Oxygen Sensor 0085424518

Compatibility：For E-Class W212 550 2011 2012 2013 2014 2015 Function: The frequency and amplitude of the oxygen sensor’s signal fluctuations reflect the engine’s combustion status; maintenance personnel can analyse the engine’s operational health through the sensor data. Installation: After fitting this oxygen sensor, start the engine to check its function and observe whether the fault light has gone out; if possible, use a diagnostic tool to read the sensor data and confirm that it is functioning correctly. Please note: Before purchasing, please check that the make, model, year and engine type of your vehicle match those listed, to avoid installation failures due to incompatible specifications. After-sales service: Should you encounter any issues whilst using the product, please let us know and we will provide a solution without delay.