Hello, I just got a 350 petrol engine with a engine number, in which the problem with the bad gear wheel on the balancing shaft no longer occurs. Now I have the bad luck that I got an engine from the series with the bad steering chains (which were not only delivered to Mercedes ). The replacement of the steering chain cost over 280€ The bulwark application was made in a nice letter with the reference to the 9th operating year and 135tsd driven kilometers. I think that’s embarrassing for the manufacturer. They messed up at the W251 and they don’t stand for it.