Specifications
| Fuel | Turbocharged, After-cooled |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 1328 kW |
| Standby kVA | 1706 |
| Prime power | 1328 kW |
| Emissions | EPA NSPS Stationary Emergency Tier 2 |
| Oil capacity | 235.0 L |
| Alternator | 55A |
| Voltage options | 24 V |
| Phase | Single/Three-Phase |
| Coolant capacity | 294 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 4674×2468×3100 mm |
| Dry weight | 7429 kg |
Engine
| Oil capacity | 235.0 L |
|---|---|
| Coolant capacity | 113.0 L |
| Displacement | 50.3 L |
| Aspiration | Turbocharged and low temperature after-cooled |
| Rated speed | 113 rpm |
Maintenance & consumables
for the Cummins/Onan QSK50- G4| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 140.0 | — | |||
| Fuel | ASTM-D975/No.1 or No.2-D | — | |||
| Oil | 235.0 L | — | |||
| Spark plug | — |
Common questions
What size generator is the Cummins/Onan QSK50-G4?
The Cummins/Onan QSK50-G4 is rated 1328 kW standby (1706.0 kVA).
What engine is in the Cummins/Onan QSK50-G4?
The Cummins/Onan QSK50-G4 is powered by the Cummins/Onan QSK50- G4 engine.
What fuel does the Cummins/Onan QSK50-G4 use?
The Cummins/Onan QSK50-G4 runs on Turbocharged, After-cooled.
How much oil does the Cummins/Onan QSK50-G4 take?
The Cummins/Onan QSK50- G4 engine in the Cummins/Onan QSK50-G4 has an oil capacity of 235.0 liters.
What alternator comes on the Cummins/Onan QSK50-G4?
The Cummins/Onan QSK50-G4 uses a 55A alternator.
Parts
11| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-3963 | Filter, Air | 2 | Air filter | Amazon eBay $95.37 |
| 149-2792 | Filter, Fuel | 1 | Fuel filter | Amazon eBay |
| 501-0970-01 | Line, Fuel | 1 | Hose | Amazon eBay |
| 503-1705 | Hose, Hump | 2 | Hose | Amazon eBay |
| 503-2754-01 | Hose, Oil | 1 | Hose | Amazon eBay |
| 503-2754-02 | Hose, Oil | 1 | Hose | Amazon eBay |
| 543-0088 | Package, Fuel Filter | 1 | Fuel filter | Amazon eBay |
| 6794600 | Washer, Sealing | 1 | Seal | Amazon eBay |
| AF2559300 | Element, Replacement (Cummins Filtration Part Number) | 1 | Air filter | Amazon eBay |
| 102-1335 | Plug, Oil Drain | 1 | Service part / kit | Amazon eBay |
| 140-1548 | Indicator, Service | 2 | Service part / kit | Amazon $29.99 eBay $49.99 |
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 |
|---|---|---|---|
| Base | 100% | 281.0 | 74.1 |
| Prime | 100% | 415.0 | 109.6 |
| Standby | 100% | 373.0 | 98.4 |
Available documents
Spec sheet — 0070823 (Cummins/Onan)Spec sheet — Cummins-QSK50-G4-Generator-Set-Spec-SheetSpec sheet — QSK50-G4-URSpec sheet — QSK50-G4 (Cummins/Onan)