bought the hitch from Curt Mfg. , Modell 11816/257231 for Mercedes 300E. Gross load capacity is 2.500 lbs trailer weight and 200lbs tongue weight. hitch fasted the same way to the car as the Orbis one which is used by MB when factory ordered. Bought a wiring kit and an upgrade relay in Germany and it was not necessary to cut the wiring harness. This change did not interfere with bulb control light in the dash and the cruise control. Hitch is powder coated and well hidden. Curt Mfg. claim hitch can be installed 30 minutes and that I would like to see. Hitch is bolted fastened with 8 bolts to the car, If I remember correctly 4 holes had to be drilled. Hitch was offered on ebay.