An inline engine in a “W” configuration (2 cylinders in each of 6 blocks), designed and produced at the Société des Avions H. M. et D. Farman works in Billancourt. The engine was used in the prototype of the Lublin R.VIII aircraft.
| Configuration | 12-cylinder “W” |
| Cooling | liquid |
| Compression ratio | 5.3 l |
| Displacement | 25.5 l |
| Propeller reduction | 0.74 |
| Weight | 505 kg |
| Maximum power | 550 hp at 2150 rpm |
| Rated power | 500 hp at 2000 rpm |
