The Cummins/Onan QSK95 series is a 95.3 L 16-cylinder turbocharged / aftercooled engine rated at 2600 rpm. It powers generator sets from Cummins/Onan, including the C3000 D6, C3250 D6, C3500 D5e and C3500 D6.
Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | Unhoused dry replaceable element | | — | | |
| Fuel filter | On engine triple element, 5 micron primary filtration with water separators, 3 micron/2 micron (filter in filter design) secondary filtration | | — | | |
| Oil filter | | | — | | |
| Battery | 6 x 1400 amps minimum at ambient temperature of -18 °C (0 °F) | | — | | |
| Belt | | | — | | |
| Coolant | | | — | | |
| Oil | | | — | | |
| Spark plug | | | — | | |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Parts cataloged across the Cummins/Onan QSK95 family
2| Part # | Description | Category |
|---|
| DMC8000 | system automation controller | other_service |
| 5573078 | Fuel Pump Lifting Kit | pump |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Common questions
What is the displacement of the Cummins/Onan QSK95 series?
The Cummins/Onan QSK95 series has a displacement of 95.3 liters with 16 cylinders.
Which generators use the Cummins/Onan QSK95 series engine?
The Cummins/Onan QSK95 series powers 7 generator set(s), including Cummins/Onan C3000 D6, Cummins/Onan C3250 D6, Cummins/Onan C3500 D5e, Cummins/Onan C3500 D6, Cummins/Onan C3750 D5e.