Cummins/Onan 4BT3.9-G4 Engine
The Cummins/Onan 4BT3.9-G4 is a 3.92 L turbocharged engine rated at 1500 rpm. It powers generator sets from Cummins/Onan, including the 32DGCA*, 40DGCA*, 50DGCA* and 50DGCB*. It holds 10.9 L (2.9 gal) of oil and 21.2 L (5.6 gal) of coolant.
Engine specifications
| Oil capacity | 10.9 L |
|---|---|
| Coolant capacity | 21.2 L |
| Displacement | 3.92 L |
| Aspiration | Turbocharged |
| Rated speed | 1500 rpm |