A 6-cylinder inline, 24-valve, liquid-cooled engine produced by Motoren GmbH in Friedrichshafen. It was used in the Zeppelin Staaken R.VI, Rumpler C.VI, and Rumpler C.VII aircraft.
| Configuration | 6-cylinder inline |
| Cooling | liquid |
| Compression ratio | 6.0 |
| Displacement | 23 l |
| Weight | 403 kg |
| Maximum power | 280 hp at 1500 rpm |
| Rated power | 250 hp at 1400 rpm |
