The Cummins/Onan QSK45 is a 45 L 12-cylinder turbocharged and aftercooled engine rated at 1900 rpm. It holds 182 L (48.1 gal) of oil and 110 L (29.1 gal) of coolant.
Also known as: Cummins Inc. QSK45
Part of the Cummins/Onan QSK45 engine family — 2 variants share parts & fitment.
| Oil capacity | 182.0 L |
|---|---|
| Coolant capacity | 110.0 L |
| Displacement | 45.0 L |
| Cylinders | 12 |
| Aspiration | Turbocharged and Aftercooled |
| Rated speed | 1900 rpm |
No generator set in our catalog cites this exact engine designation yet; its specifications and fault codes are documented here.
| Code | Meaning |
|---|---|
| OS | Overspeed |
| LOP | Low Oil Pressure |
| HET | High Engine Temperature |
| Fault 1 | High Engine Temperature Shutdown |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
The Cummins/Onan QSK45 engine has an oil capacity of 182.0 liters.
The Cummins/Onan QSK45 has a displacement of 45.0 liters with 12 cylinders.