Specifications
| Standby power | 385 kW |
|---|---|
| Standby kVA | 409 |
| Prime power | 444 kW |
| Oil capacity | 91.0 L |
| Voltage options | 24 V |
| Coolant capacity | 42.0 L |
| Max ambient | 55 °C |
| Dimensions (L×W×H) | 2269×1332×1669 mm |
| Dry weight | 1658 kg |
Maintenance & consumables
for the Cummins/Onan QSX15| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | 1500 hr | find | ||
| Fuel filter | — | 6000 hr | find | ||
| Oil filter | — | 24000 hr | find | ||
| Belt | — | 250 hr | find | ||
| Coolant | 90.8 L | — | 540 hr | ||
| Coolant filter | Replace | — | 1500 hr | find | |
| Oil | 91.0 l | — | 24000 hr |
Common questions
What is the power rating of the Cummins/Onan QSX15?
The Cummins/Onan QSX15 is rated 385 kW standby (409.0 kVA).
What engine does the Cummins/Onan QSX15 use?
The Cummins/Onan QSX15 is powered by the Cummins/Onan QSX15 engine.
Troubleshooting
4Fault codes
| 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 model’s service/owner documentation; verify against the official manual before servicing.
Parts
15| Part # | Description | Qty | System | |
|---|---|---|---|---|
| M-3613547 | Temperature Sensor | Temperature sensor | buy | |
| M-4024940 | Cylinder Seal All | Cylinder seal all | buy | |
| M-4024941 | Piston | Piston | buy | |
| M-4376220 | Upper Gasket Set | Gasket | buy | |
| M-4376221 | Lower Gasket Set | Gasket | buy | |
| M-4921597 | Position Sensor | Position sensor | buy | |
| M-5473087 | Piston Kit | Piston kit | buy | |
| M-5484414 | Piston Pin | Piston pin | buy | |
| MCBM110006 | Gasket Set - Oil Cooler | Oil cooler gasket set | buy | |
| MCIF4024941 | In-Frame Engine Kit | In frame engine kit | buy | |
| 3163156 | Service cable for InPower™ | Service part / kit | buy | |
| 3822735 | Plastic bead media | Service part / kit | buy | |
| 3886301 | InPower™ electronic service tool | Service part / kit | buy | |
| TB3-5 | Generator Set Control Panel Terminal Block | 1 | Service part / kit | buy |
| TB3-6 | Generator Set Control Panel Terminal Block | 1 | Service part / kit | buy |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 100% | 107.0 | 28.4 |
| Standby | 100% | 123.0 | 32.4 |
Available documents
Engine specSpec sheetOperator's manualReferenceService manual