Service parts for the CG500C2
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 | 500 kW |
| Standby kVA | 625 |
| Prime power | 455 kW |
| Emissions | Tier 2 |
| Controller | PowerCommand |
| Oil capacity | 91.0 L |
| Alternator | Stamford/AvK HCI534E1 |
| Voltage options | 120/208 V, 277/480 V |
| Phase | 3 |
| Power factor | 0.8 |
| Battery cranking | 1425 CCA |
| Battery voltage | 24 V |
| Coolant capacity | 24 L |
| Dimensions (L×W×H) | 6045×2438×3810 mm |
| Fuel tank | 3028.0 L |
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 13 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 |
|---|---|
| Cummins/Onan | 350DFEG, 450 DFEJ, 500 DFEK, C450D6, DFE, DFEJ, DFEK, DFEK-5737120, QSX15 |
| Katolight | D500FJZ4, D500FNZ4, D500FPZ4, D500FRZ4 |
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 MQ Power CG500C2?
The MQ Power CG500C2 is rated 500 kW standby (625.0 kVA).
What engine is in the MQ Power CG500C2?
The MQ Power CG500C2 is powered by the Cummins/Onan QSX15-G9 engine.
Is the MQ Power CG500C2 diesel or gas?
The MQ Power CG500C2 runs on diesel.
What's the oil capacity on a MQ Power CG500C2?
The Cummins/Onan QSX15-G9 engine in the MQ Power CG500C2 has an oil capacity of 83.3 liters.
How much coolant does the MQ Power CG500C2 hold?
The MQ Power CG500C2 cooling system holds 24 liters (6.3 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What is the prime power rating of the MQ Power CG500C2?
The MQ Power CG500C2 is rated 455 kW prime (569 kVA), against 500 kW standby.
How big is the fuel tank on the MQ Power CG500C2?
The MQ Power CG500C2 has a 3028 liter (800 US gallon) fuel tank.
What voltages is the MQ Power CG500C2 available in?
The MQ Power CG500C2 is offered in 120/208 V, 277/480 V, 3-phase.
What battery does the MQ Power CG500C2 use?
The MQ Power CG500C2 uses 24 V each, 1425 CCA, per the manufacturer specification sheet.
Which alternator is fitted to the MQ Power CG500C2?
The MQ Power CG500C2 uses a Stamford/AvK HCI534E1 alternator.
Which air filter part number does the MQ Power CG500C2 take?
The MQ Power CG500C2 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.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 25% | 37.4 | 9.9 |
| Prime | 50% | 65.3 | 17.2 |
| Prime | 75% | 90.5 | 23.9 |
| Prime | 100% | 117.8 | 31.1 |
| Standby | 25% | 43.9 | 11.6 |
| Standby | 50% | 71.1 | 18.8 |
| Standby | 75% | 97.2 | 25.7 |
| Standby | 100% | 130.2 | 34.4 |
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.