The Cummins/Onan QSL9-G9 is a 8.9 L 6-cylinder turbocharged and after-cooled engine rated at 1800 rpm. It powers generator sets from Cummins/Onan and MQ Power, including the C275 D2Re and CG250DUAL. It holds 18.9 L (5.0 gal) of oil and 53 L (14.0 gal) of coolant.
| Oil capacity | 18.9 L |
|---|---|
| Coolant capacity | 53.0 L |
| Displacement | 8.9 L |
| Cylinders | 6 |
| Aspiration | turbocharged and after-cooled |
| Rated speed | 1800 rpm |
Shared across brands: Cummins/Onan, MQ Power