The Kohler KDI 1903M is a 1.86 L 3-cylinder natural engine rated at 1800 rpm, producing up to 21 kW. It powers generator sets from Kohler, including the 15REOZK, K20U, KDI 1903 M and KDI1903M/15 EP-NP. It holds 8.9 L (2.4 gal) of oil and 10.5 L (2.8 gal) of coolant.
| Oil capacity | 8.9 L |
|---|---|
| Coolant capacity | 10.5 L |
| Displacement | 1.861 L |
| Cylinders | 3 |
| Aspiration | Natural |
| Rated speed | 1800 rpm |
| Gross power | 21 kW |