Service parts for the C45 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 | 45 kW |
| Standby kVA | 56 |
| 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 | 1624 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 |
Common questions
What is the power rating of the Cummins/Onan C45 N6H?
The Cummins/Onan C45 N6H is rated 45 kW standby (56.0 kVA).
What engine does the Cummins/Onan C45 N6H use?
The Cummins/Onan C45 N6H is powered by the Cummins/Onan QSJ2.4 engine.
Which oil filter part number does the Cummins/Onan C45 N6H take?
The Cummins/Onan C45 N6H uses oil filter part number CA135-E12.
What air filter does the Cummins/Onan C45 N6H use?
The Cummins/Onan C45 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.