Service parts for the C50 N6H
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 50 kW |
| Standby kVA | 63 |
| Controller | PowerCommand 1.1 |
| Oil capacity | 4.3 L |
| Voltage options | 120/240 V, 120/208 V, 277/480 V |
| Phase | 1-phase,3-phase |
| Battery group | ['26 standard', '34 high capacity'] |
| Battery cranking | [545, 850] CCA |
| Battery voltage | 12 V |
| Coolant capacity | 12.8 L |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 876×34×44 mm |
| Dry weight | 1750 kg |
| Wet weight | 1287 kg |
Engine
| Coolant capacity | 12.8 L |
|---|---|
| Displacement | 2.4 L |
| Aspiration | Naturally aspirated or turbocharged (varies by generator set model) |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Cummins/Onan QSJ2.4| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Preventive Maintenance Kit (Normal Duty Air Filter) | A046N987 | Amazon eBay | ||
| Fuel filter | Every 500 hours of operation or as needed, whichever comes first | — | 500 hr | ||
| Oil filter | Large, Oil Cooler | CA135-E12 | Amazon eBay | ||
| Battery | As needed | — | |||
| Oil | 500 miles or 6 months, whichever comes first | — | 804 hr | ||
| Spark plug | C20 N6 (Spec A), C22 N6 (Spec A), C25 N6 (Spec A), C30 N6 (Spec A), C36 N6 (Spec A), C40 N6 (Spec A), C45 N6 (Spec A), C50 N6H (Spec A), C60 N6H (Spec A) | — | 1200 hr |
Common questions
What is the power rating of the Cummins/Onan C50 N6H?
The Cummins/Onan C50 N6H is rated 50 kW standby (63.0 kVA).
What engine does the Cummins/Onan C50 N6H use?
The Cummins/Onan C50 N6H is powered by the Cummins/Onan QSJ2.4 engine.
What oil filter fits the Cummins/Onan C50 N6H?
The Cummins/Onan C50 N6H uses oil filter part number CA135-E12.
What air filter does the Cummins/Onan C50 N6H use?
The Cummins/Onan C50 N6H uses air filter part number A046N987.
Troubleshooting
2Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Any spillage that occurs during fueling or during oil top-off or oil change must be cleaned up before starting the generator set. | Clean up any spillage before starting the generator set. | |
| Fire Hazard | Contaminated insulation is a fire hazard. | Remove any contaminated insulation and dispose of it in accordance with local regulations. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
13| Part # | Description | Qty | System | |
|---|---|---|---|---|
| A046N983 | Preventive Maintenance Kit –Heavy Duty | 2 | Air filter | Amazon eBay |
| A046N985 | Preventive Maintenance Kit (Normal Duty Air Filter) | 2 | Air filter | Amazon eBay |
| A046N987 | Preventive Maintenance Kit (Normal Duty Air Filter) | 2 | Air filter | Amazon eBay |
| CA115-T12 | Large, Oil Cooler | Oil filter | Amazon eBay | |
| CA135-E12 | Large, Oil Cooler | Oil filter | Amazon eBay | |
| A046J612 | Base Barrier – Elevated Genset | 1 | Service part / kit | Amazon eBay |
| A046L270 | Instruction Sheet | 1 | Service part / kit | Amazon eBay |
| CA115-H14 | Small | Service part / kit | Amazon eBay | |
| CA115-J12 | Small | Service part / kit | Amazon eBay | |
| CA115-L14 | Small | Service part / kit | Amazon eBay | |
| CA115-M12 | Large | Service part / kit | Amazon eBay | |
| CA115-P12 | Large | Service part / kit | Amazon eBay | |
| CA115-R12 | Large | 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.