Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 250 kW |
| Phase | 3 |
| Battery voltage | 24VDC V |
Maintenance & consumables
for the Cummins/Onan QSM11-G1| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | — |
Common questions
What size generator is the Cummins/Onan 250DQAD?
The Cummins/Onan 250DQAD is rated 250 kW standby.
What engine is in the Cummins/Onan 250DQAD?
The Cummins/Onan 250DQAD is powered by the Cummins/Onan QSM11-G1 engine.
Parts
39| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 140-2636 | Element, Filter (Outer) | 1 | Air filter | Amazon eBay |
| 140-2637 | Cleaner, Air (Includes Elements) | 1 | Air filter | Amazon eBay |
| 140-2638 | Element, Filter (Inner) | 1 | Air filter | Amazon eBay |
| 140-3288-02 | Cleaner, Air | 2 | Air filter | Amazon eBay |
| 149-2699-01 | Pump, Fuel - Assembly 2 GPM | 1 | Pump | Amazon eBay |
| 149-2710-01 | Pump, Fuel - With Motor 2 GPM | 1 | Pump | Amazon eBay |
| 151-0411 | Pickup, Magnetic | 1 | Sensor | Amazon eBay KuduParts $208.00 |
| 190-0200 | Thermostat | 1 | Thermostat | Amazon eBay |
| 193-0432 | Sender, Oil Temperature (S2 Engine Block, E4 Oil Pan) | 2 | Sensor | Amazon eBay |
| 193-0444 | Sender, Oil Pressure (S1) | 1 | Sensor | Amazon eBay |
| 300-5815 | Control, Pump - ECM | 1 | ECM / ECU | Amazon eBay |
| 307-2621-02 | Relay, Start Solenoid (K4) | 1 | Relay | Amazon eBay |
| 308-0913-06 | Switch, Float | 1 | Sensor | Amazon eBay |
| 309-0269 | Switch, Low Engine Temperature (S4) | 1 | Sensor | Amazon eBay |
| 309-0701-01 | Switch, Level - High and Low | 1 | Sensor | Amazon eBay |
| 309-0702-01 | Switch, Level - Rupture Basin | 1 | Sensor | Amazon eBay |
| 399-0117 | Pump, Fuel Transfer | 16 | Pump | Amazon eBay |
| 399-0121 | Kit, Repair - Fuel Tank Pump | 1 | Pump | Amazon eBay |
| 415-0565-15 | Gauge, Liquid Level | 1 | Sensor | Amazon eBay |
| 415-0566-15 | Pipe, Suction | 1 | Hose | Amazon eBay |
| 420-0609-01 | Gauge - Fuel Level | 1 | Sensor | Amazon eBay |
| 503-0098 | Hose, Oil Drain - Bulk (Order By The Foot - 3 Feet Required) | 1 | Hose | Amazon eBay |
| 503-0189 | Clamp, Hose | 1 | Hose | Amazon eBay |
| 505-0172 | Nipple, Close (2 x 2") | 1 | Hose | Amazon eBay |
| 518-0548-01 | Clamp, Hose | 2 | Hose | Amazon eBay |
| 102-1335 | Plug, Oil Drain | 1 | Service part / kit | Amazon eBay |
| 155-2409-04 | Elbow, Exhaust | 1 | Service part / kit | Amazon eBay |
| 155-3510 | Elbow, Muffler | 1 | Service part / kit | Amazon eBay |
| 155-3540 | Silencer | 1 | Service part / kit | Amazon eBay |
| 155-4022 | Muffler | 1 | Service part / kit | Amazon eBay |
| 155-4062 | Muffler | 1 | Service part / kit | Amazon eBay |
| 159-1208-01 | Cap, Fuel | 1 | Service part / kit | Amazon eBay |
| 159-1299 | Bracket, Mounting | 1 | Service part / kit | Amazon eBay |
| 159-1573-01 | Tank, Fuel 300 Gallon | 1 | Service part / kit | Amazon eBay |
| 338-4426 | Harness, Wiring | 1 | Service part / kit | Amazon eBay |
| 415-0727 | Tank, Day (19 Gallons) | 1 | Service part / kit | Amazon eBay |
| 502-1259 | Coupler, Coolant Heater | 1 | Service part / kit | Amazon eBay |
| 504-0252 | Valve, Solenoid - Fuel | 1 | Service part / kit | Amazon eBay |
| 625-2141-01 | Control, Fuel Tank | 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
Parts manual — 960-0218 Cummins DQAD DQAE DQAF spec B Parts Manual (1-2004) (Cummins/Onan)