Specifications
| Fuel | Turbocharged, After-cooled |
|---|---|
| Standby power | 1401 kW |
| Prime power | 1210 kW |
| Emissions | EPA NSPS Stationary Emergency Tier 2 |
| Oil capacity | 235.0 L |
| Alternator | Cummins/Onan DSG86 |
| Coolant capacity | 294 L |
| Max ambient | 53 °C |
| Dimensions (L×W×H) | 4674×2468×3100 mm |
| Dry weight | 7429 kg |
Engine
| Oil capacity | 204.0 L |
|---|---|
| Coolant capacity | 161.0 L |
| Displacement | 50.3 L |
| Aspiration | Turbocharged, After-cooled |
| Rated speed | 1900 rpm |
Maintenance & consumables
for the Cummins/Onan QSK50 series| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | find | |||
| Fuel filter | — | find | |||
| Oil filter | — | find | |||
| Belt | — | find | |||
| Coolant | 4000.0 | — | |||
| Oil | 216.0 | — |
Common questions
What is the power rating of the Cummins/Onan QSK50?
The Cummins/Onan QSK50 is rated 1401 kW standby.
What engine does the Cummins/Onan QSK50 use?
The Cummins/Onan QSK50 is powered by the Cummins/Onan QSK50 series engine.
What fuel does the Cummins/Onan QSK50 use?
The Cummins/Onan QSK50 runs on Turbocharged, After-cooled.
What is the oil capacity of the Cummins/Onan QSK50?
The Cummins/Onan QSK50 series engine in the Cummins/Onan QSK50 has an oil capacity of 204.0 liters.
What alternator does the Cummins/Onan QSK50 use?
The Cummins/Onan QSK50 uses a Cummins/Onan DSG86 alternator.
Parts
16| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-3963 | Filter, Air | 2 | Air filter | Amazon eBay PartsGeek |
| 149-2792 | Filter, Fuel | 1 | Fuel filter | PartsGeek |
| 501-0970-01 | Line, Fuel | 1 | Hose | PartsGeek |
| 503-1705 | Hose, Hump | 2 | Hose | PartsGeek |
| 503-2754-01 | Hose, Oil | 1 | Hose | PartsGeek |
| 503-2754-02 | Hose, Oil | 1 | Hose | PartsGeek |
| 5394933 | Crankshaft Rear Oil Seal Removal & Installation Kit | Seal | PartsGeek | |
| 543-0088 | Package, Fuel Filter | 1 | Fuel filter | PartsGeek |
| 6794600 | Washer, Sealing | 1 | Seal | PartsGeek |
| AF2559300 | Element, Replacement (Cummins Filtration Part Number) | 1 | Air filter | Amazon eBay PartsGeek |
| MCBQSK0068 | Water Pump Gasket Set | Gasket | PartsGeek | |
| 102-1335 | Plug, Oil Drain | 1 | Service part / kit | PartsGeek |
| 140-1548 | Indicator, Service | 2 | Service part / kit | Amazon eBay PartsGeek |
| M-2885786 | Cylinder Liner Kit | Service part / kit | PartsGeek | |
| M-3007525 | Cylinder Liner Kit | 1 | Service part / kit | PartsGeek |
| M-3022157 | Cylinder Liner | 1 | Service part / kit | PartsGeek |
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 | 75% | 286.0 | |
| Prime | 100% | 337.0 | 89.1 |
| Standby | 100% | 313.0 | 82.6 |
Available documents
Engine spec — 0032276 (Cummins/Onan)Engine spec — 0032425 (Cummins/Onan)Engine spec — 4087055 (Cummins/Onan)Spec sheet — 0070821 (Cummins/Onan)Spec sheet — 0070822 (Cummins/Onan)Spec sheet — QSK50-G2 (Cummins/Onan)Spec sheet — QSK50-G3-UR (Cummins/Onan)Spec sheet — QSK50-G3 (Cummins/Onan)Reference — B20BiodieselFAQJan2009Reference — SST Energy CorporationReference — Schedule Technical2012 (Cummins/Onan)Parts manual — {5bc4040d-d72a-4ebb-81b9-034afcefa4a9} Cummins Mechanical Electrical Service Tools June 2019