Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Cummins/Onan QSM11-G1 is an engine. It powers generator sets from Cummins/Onan, including the 220DQAD and 250DQAD.
Also known as: Cummins QSM11-G1
Part of the Cummins/Onan QSM11 engine family — 14 variants share parts & fitment.
How to read your Cummins/Onan engine serial & model number →
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| 140-2636 | Element, Filter (Outer) | Air filter |
| 140-2637 | Cleaner, Air (Includes Elements) | Air filter |
| 140-2638 | Element, Filter (Inner) | Air filter |
| 140-3288-02 | Cleaner, Air | Air filter |
| RU3220 | Air Cleaner | Air filter |
| 2874862 | Alternator 12V | Alternator |
| 2874863 | Alternator 24V | Alternator |
| 3037425 | Belt | Belt |
| A40-TB1-8 | JUMPER WIRE | Belt |
| WF2072 | Coolant Filter | Coolant filter |
| 49c00185 | Data Link | Data link |
| 300-5815 | Control, Pump - ECM | ECM / ECU |
| 12000187 | Engine position sensor | Engine position sensor |
| 13200060 | Engine Speed Control Switch | Engine speed control switch |
| 33200082 | Engine Stop Button | Engine stop button |
| V70509 | Lube Oil | Fluid |
| 12000183 | Fuel filter | Fuel filter |
| 3376807 | Fuel filter | Fuel filter |
| FS1000 | Fuel Filter | Fuel filter |
| 15600049 | Fuel Shutoff Valve | Fuel shutoff valve |
| 19400715 | OEM Interface 21-Pin Harness Connector | Hose |
| 19400718 | OEM Interface 24-Pin Harness Connector | Hose |
| 415-0566-15 | Pipe, Suction | Hose |
| 503-0098 | Hose, Oil Drain - Bulk (Order By The Foot - 3 Feet Required) | Hose |
| 503-0189 | Clamp, Hose | Hose |
| 505-0172 | Nipple, Close (2 x 2") | Hose |
| 518-0548-01 | Clamp, Hose | Hose |
| 38200567 | Idle Adjustment Switch | Idle adjustment switch |
| 3375049 | Oil Filter Wrench | Oil filter |
| 3397929 | Oil filter wrench | Oil filter |
| LF9001 | Lube Filter | Oil filter |
| LFg9001 | Valvoline® Premium Blue® | Oil filter |
| 12000186 | Oil pressure and temperature sensor | Oil pressure and temperature sensor |
| 13200087 | Oil Pressure Gauge | Oil pressure gauge |
| 05200182 | Flywheel ring gear sensor | Service part / kit |
| 102-1335 | Plug, Oil Drain | Service part / kit |
| 12000184 | Rail pressure | Service part / kit |
| 12000188 | Freon compressor mounting location. | Service part / kit |
| 155-2409-04 | Elbow, Exhaust | Service part / kit |
| 155-3510 | Elbow, Muffler | Service part / kit |
| 155-3540 | Silencer | Service part / kit |
| 155-4022 | Muffler | Service part / kit |
| 155-4062 | Muffler | Service part / kit |
| 159-1208-01 | Cap, Fuel | Service part / kit |
| 159-1299 | Bracket, Mounting | Service part / kit |
| 159-1573-01 | Tank, Fuel 300 Gallon | Service part / kit |
| 19400716 | Hard-Coupled | Service part / kit |
| 19400734 | Intermediate Speed Control | Service part / kit |
| 19800802 | Multiple Unit Synchronization | Service part / kit |
| 307-2621-02 | Relay, Start Solenoid (K4) | Service part / kit |
| 3305070 | Heater, 240V | Service part / kit |
| 3315033 | Heater, 120V | Service part / kit |
| 338-4426 | Harness, Wiring | Service part / kit |
| 3885910 | Red Paint, Spray can | Service part / kit |
| 415-0727 | Tank, Day (19 Gallons) | Service part / kit |
| 492000038 | Operation and Maintenance Nanual | Service part / kit |
| 49800897 | Intermediate Speed Control | Service part / kit |
| 49801587 | Electronic Fan Clutch | Service part / kit |
| 502-1259 | Coupler, Coolant Heater | Service part / kit |
| 504-0252 | Valve, Solenoid - Fuel | Service part / kit |
| 625-2141-01 | Control, Fuel Tank | Service part / kit |
| 8210G4-12VDC | 1" 12V solenoid | Service part / kit |
| 8210G4-24VDC | 1" 24V solenoid | Service part / kit |
| 98200038 | Engine Steam Cleaning | Service part / kit |
| A40-TB1-1 | B+ | Service part / kit |
| A40-TB1-11 | (COMMON ALARM) | Service part / kit |
| A40-TB1-12 | (B-) | Service part / kit |
| A40-TB1-30 | COMMON ALARM | Service part / kit |
| A40-TB1-31 | (COMMON ALARM) | Service part / kit |
| C2800 | Fleetguard® refractometer | Service part / kit |
| CC2800 | Fleetguard refractometer | Service part / kit |
| E204747 | Coolant heater 240/480V 6420W 1PH | Service part / kit |
| LE9o01 | Cummins Engine Company, Inc. | Service part / kit |
| 3376326 | pulley pusher (2) | Pulley pusher |
| 3377401 | pulley pusher adapter (1) | Pulley pusher adapter |
| 12000180 | Fuel inlet to pump | Pump |
| 12000185 | Power steering pump mounting location | Pump |
| 149-2699-01 | Pump, Fuel - Assembly 2 GPM | Pump |
| 149-2710-01 | Pump, Fuel - With Motor 2 GPM | Pump |
| 399-0117 | Pump, Fuel Transfer | Pump |
| 399-0121 | Kit, Repair - Fuel Tank Pump | Pump |
| 39200434 | Governed rpm | Rpm governor |
| 151-0411 | Pickup, Magnetic | Sensor |
| 193-0432 | Sender, Oil Temperature (S2 Engine Block, E4 Oil Pan) | Sensor |
| 193-0444 | Sender, Oil Pressure (S1) | Sensor |
| 308-0913-06 | Switch, Float | Sensor |
| 309-0269 | Sender, Temperature-Lo Engine | Sensor |
| 309-0701-01 | Switch, Level - High and Low | Sensor |
| 309-0702-01 | Switch, Level - Rupture Basin | Sensor |
| 415-0565-15 | Gauge, Liquid Level | Sensor |
| 420-0609-01 | Gauge - Fuel Level | Sensor |
| 13200052 | Slow Idle Feature | Slow idle feature |
| 2871254 | Starter 12V | Starter |
| 3103916 | Starter 24V | Starter |
| 3200069 | STOP CHECK! | Stop check |
| 43200086 | Tachometer w/Hour Meter | Tachometer |
| 190-0200 | Thermostat | Thermostat |
| 43200085 | Voltmeter | Voltmeter |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Cummins/Onan QSM11-G1 powers 2 generator set(s), including Cummins/Onan 220DQAD, Cummins/Onan 250DQAD.