Mercedes GL320 GL350 BlueTEC Diesel Particulate Filter DPF. This DPF is original Mercedes Part. It was only 500 Miles in use. It was changed by Mercedes Benz. Right after the repair somebody HIT my car.  The DPF is not brand new but really in good condition. 
My Car was a 2010 Mercedes GL 350 Bluetec. The engine OM642. I think this DPF will also fit for the ML 350 Blutec. 

Please check your part number on your vehicle.