The Cummins/Onan KTA19G4 is a 18.9 L 6-cylinder turbo aftercooled engine rated at 1800 rpm, producing up to 473 kW. It powers generator sets from Cummins/Onan, including the 409DFED, 501 DFED and DFED. It holds 50 L (13.2 gal) of oil and 105 L (27.7 gal) of coolant.
| Oil capacity | 50.0 L |
|---|---|
| Coolant capacity | 105.0 L |
| Displacement | 18.9 L |
| Cylinders | 6 |
| Aspiration | Turbo Aftercooled |
| Rated speed | 1800 rpm |
| Gross power | 473 kW |