A modification of the Benz Bz IV engine from 1915, produced in 6400 units. The engine is equipped with aluminium pistons. It was used in the AEG J.I, J.II, N.I, AGO C.IV, Albatros C.VII, C.XV, G.III, J.I, DFW C.V, Halberstadt C.V, Friedrichshafen G.II, FF 49, FF 59, and LVG C.V aircraft.
| Configuration | 6-cylinder inline |
| Cooling | liquid |
| Compression ratio | 5.0 |
| Displacement | 18.8 l |
| Weight | 370 kg |
| Maximum power | 255 hp at 1500 rpm |
| Nominal power | 230 hp at 1400 rpm |
