Service parts for the 350DFEG
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 350 kW |
| Controller | PCC2100, PCC3201 |
| Oil capacity | 83.3 L |
| Voltage options | 12 V |
| Phase | 3 |
| Battery voltage | 24 V |
Engine
| Oil capacity | 83.3 L |
|---|---|
| Coolant capacity | 57.9 L |
| Displacement | 15.0 L |
| Aspiration | Turbocharged with air-to-air charge air-cooling |
| Rated speed | 1800 rpm |
Filters for the Cummins/Onan QSX15-G9
6Engine-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 | P559000 | Lube Filter, Spin-On Full Flow | CUMMINS 2101869, CUMMINS 2882674, NAPA 400107, BALDWIN BD7154 | KuduParts $17.00 FridayParts $36.00 |
| Oil filter | P550949 | Lube Filter, Spin-On Full Flow | CUMMINS 2882673, CUMMINS 4331005, NAPA 400107, BALDWIN B7322 | KuduParts $67.00 FridayParts $69.59 |
| Fuel filter | P763995 | Fuel Filter, Spin-On | IRISBUS 0504112123, ASTRA 132347, DAF TRP 1533849, NEW HOLLAND 1931108 | buy |
| Fuel / water separator | P551048 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3104081, BALDWIN BF9920, HYUNDAI 11ND70010, WIRTGEN 2111170 | buy |
| Fuel / water separator | P551047 | Fuel Filter, Water Separator Spin-On Twist&Drain | CUMMINS 3101871, CUMMINS 3101872, NAPA 3423, BALDWIN BF1277-SPS | KuduParts $51.00 |
Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Coolant filter | P552073 | Coolant Filter, Spin-On Sca Plus | CUMMINS 209605, CUMMINS 299082, NAPA 4073, IMPERIAL 04WF2073 | buy |
Same engine, other brands
2 brandsThe Cummins/Onan QSX15-G9 in this set also powers 5 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 |
|---|---|
| Katolight | D500FJZ4, D500FNZ4, D500FPZ4, D500FRZ4 |
| MQ Power | CG500C2 |
Maintenance & consumables
for the Cummins/Onan QSX15-G9| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | L028-2 | 50 hr | eBay | ||
| Fuel filter | New o-ring seal supplied with the new filter. For Biodiesel applications use gasket pack 3950445 S (green) and change with every filter change. | — | |||
| Oil filter | 885 hrs 5/13/25 | — | 500 hr | ||
| Battery | 2 8D batteries | — | 100 hr | ||
| Coolant | -35 | 57.9 | — | 8 hr | |
| Oil | 88.0 L | — | 8 hr |
Common questions
How many kW is the Cummins/Onan 350DFEG?
The Cummins/Onan 350DFEG is rated 350 kW standby.
Which engine powers the Cummins/Onan 350DFEG?
The Cummins/Onan 350DFEG is powered by the Cummins/Onan QSX15-G9 engine.
Is the Cummins/Onan 350DFEG diesel or gas?
The Cummins/Onan 350DFEG runs on Diesel.
What's the oil capacity on a Cummins/Onan 350DFEG?
The Cummins/Onan QSX15-G9 engine in the Cummins/Onan 350DFEG has an oil capacity of 83.3 liters.
What is the coolant capacity of the Cummins/Onan 350DFEG?
The Cummins/Onan 350DFEG cooling system holds 57.9 liters (15.3 US gallons) for the engine, per the manufacturer specification sheet.
What voltages is the Cummins/Onan 350DFEG available in?
The Cummins/Onan 350DFEG is offered in 12 V, 3-phase.
What air filter does the Cummins/Onan 350DFEG use?
The Cummins/Onan 350DFEG uses air filter part number L028-2.
Parts
11| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 0179-3536 | Coolant heater (Revision E) | Service part / kit | eBay | |
| 0402-0222 | Vibration isolator (non-seismic rated, does not carry IBC/OSHPD certification) | Service part / kit | eBay | |
| 0402-0234 | Vibration isolator (non-seismic rated, does not carry IBC/OSHPD certification) | Service part / kit | eBay | |
| 0402-0246 | Vibration isolator (non-seismic rated, does not carry IBC/OSHPD certification) | Service part / kit | eBay | |
| 0402-0427 | Vibration isolator (non-seismic rated, does not carry IBC/OSHPD certification) | Service part / kit | eBay $86.02 | |
| A035H139 | Switch, Pushbutton | 1 | Service part / kit | eBay |
| A040U808 | Harness, Control − Door (Includes Items 30 & 31) | 1 | Service part / kit | eBay |
| A046Y204 | Shield, Wiring | 1 | Service part / kit | eBay |
| CC2609 | Fleetguard Water-Check H2O 3-Way Test Strips | 1 | Service part / kit | Amazon eBay |
| TB3-5 | Generator Set Control Panel Terminal Block | 1 | Service part / kit | Amazon eBay FridayParts $399.75 |
| TB3-6 | Generator Set Control Panel Terminal Block | 1 | Service part / kit | Amazon eBay FridayParts $65.10 |
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 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.