The John Deere 4045HFG04A is a 4.5 L 4-cylinder turbo/air-to-air, after-cooled engine rated at 1800 rpm. It powers generator sets from Generac, including the MDG100DF4. It holds 15 L (4.0 gal) of oil.
| Oil capacity | 15.0 L |
|---|---|
| Displacement | 4.5 L |
| Cylinders | 4 |
| Aspiration | Turbo/air-to-air, after-cooled |
| Rated speed | 1800 rpm |