Fuel injectors of petrol engines Mercedes E-Class W211-quite expensive spare parts. In deciding to replace the nozzle, it shall be taken into account that the manufacturer shall install a different class on the engine of the engine-this characteristic can be seen on the plastic head of the part, next to the part number.
It is worth noting that it is not always necessary to replace the trout, often the problem is solved by repair in a specialized service. Its value is about 40-50% of the price of the new part.