Specifications
| Fuel | diesel |
|---|---|
| Frequency | 50.0 Hz |
| Standby power | 220 kW |
| Standby kVA | 275 |
| Prime power | 200 kW |
| Emissions | SIIIA |
| Oil capacity | 27.6 L |
| Alternator | Stamford/AvK UC274K |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 4×1×2 mm |
| Dry weight | 4369 kg |
| Sound level | 69.0 dBA @ 7 m |
| Tank runtime | 23 hr |
Engine
| Oil capacity | 27.6 L |
|---|---|
| Coolant capacity | 36.5 L |
| Displacement | 8.9 L |
| Aspiration | Turbo Charged After Cooled |
| Rated speed | 1500 rpm |
Filters for the Cummins/Onan QSL9-G3
4Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P553000 | Lube Filter, Spin-On Full Flow | CUMMINS 3318853, CUMMINS 3825970, NAPA 1748, NAPA 1748XD | FridayParts $125.00 |
| Fuel filter | P550774 | Fuel Filter, Spin-On | CUMMINS 3959612, CUMMINS 5301448, HYUNDAI 11LB70020, WIRTGEN 195744 | KuduParts $34.00 FridayParts $35.90 |
| Fuel / water separator | P550848 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3973233, CUMMINS 4931955, NAPA 3732, LINDE 0019830505 | FridayParts $50.99 |
| Coolant filter | P552071 | Coolant Filter, Spin-On Sca Plus | CUMMINS 299080, CUMMINS 299880, NAPA 4071, TORO 012706560 | FridayParts $37.53 |
Same engine, other brands
2 brandsThe Cummins/Onan QSL9-G3 in this set also powers 2 generator sets sold under 2 other brands. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| AKSA | APSD400 |
| MQ Power | MQP240 |
Maintenance & consumables
for the Cummins/Onan QSL9-G3| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | Changed 3/13/2025 at 302 HRS | — | |||
| Battery | 2, 4D (Cores) | ×2 | — | ||
| Coolant | -40 | 6.0 gal | — |
Common questions
How many kW is the Cummins/Onan C250 D2R?
The Cummins/Onan C250 D2R is rated 220 kW standby (275.0 kVA).
What engine is in the Cummins/Onan C250 D2R?
The Cummins/Onan C250 D2R is powered by the Cummins/Onan QSL9-G3 engine.
Is the Cummins/Onan C250 D2R diesel or gas?
The Cummins/Onan C250 D2R runs on diesel.
What's the oil capacity on a Cummins/Onan C250 D2R?
The Cummins/Onan QSL9-G3 engine in the Cummins/Onan C250 D2R has an oil capacity of 27.6 liters.
What is the coolant capacity of the Cummins/Onan C250 D2R?
The Cummins/Onan C250 D2R cooling system holds 36.5 liters (9.6 US gallons) for the engine, per the manufacturer specification sheet.
What is the prime power rating of the Cummins/Onan C250 D2R?
The Cummins/Onan C250 D2R is rated 200 kW prime (250 kVA), against 220 kW standby.
What is the sound level of the Cummins/Onan C250 D2R?
The Cummins/Onan C250 D2R is rated at 69.0 dBA at 7 m, per the manufacturer specification sheet.
How much does the Cummins/Onan C250 D2R weigh?
The Cummins/Onan C250 D2R has a dry weight of 4369 kg (9631 lb).
Which alternator is fitted to the Cummins/Onan C250 D2R?
The Cummins/Onan C250 D2R uses a Stamford/AvK UC274K alternator.
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| PI144D1 | Alternator Model | 1 | Alternator | Amazon eBay |
| UC274C | Alternator Model | 1 | Alternator | Amazon eBay $8681.95 |
| UC274K | Alternator Model | 1 | Alternator | Amazon eBay |
| V2403-M-E3BG | Engine Model | 1 | Service part / kit | Amazon eBay |
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.
Available documents
This page was generated from the 3 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.