The Cummins/Onan 6CT8.3G2 is a 8.3 L 6-cylinder turbocharged engine rated at 1800 rpm, producing up to 154.4 kW. It powers generator sets from Cummins/Onan, including the 122 DGEA and DGEA 60 Hz Diesel Generator Set. It holds 23.8 L (6.3 gal) of oil and 26 L (6.9 gal) of coolant.
Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | Change every 500 hours or as required | | — | 500 hr | |
| Fuel filter | Change every 1000 hours or as required | | — | 1000 hr | |
| Oil filter | Change every 500 hours or as required | | — | 500 hr | |
| Battery | Change every 10,000 hours or as required | | — | 10000 hr | |
| Belt | Change every 5000 hours or as required | | — | 5000 hr | |
| Coolant | Change every 10,000 hours or as required | 26.0 L | — | 10000 hr | |
| Oil | Change every 1000 hours or as required | 23.8 L | — | 1000 hr | |
| Spark plug | Change every 500 hours or as required | | — | 500 hr | |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Common questions
What is the oil capacity of the Cummins/Onan 6CT8.3G2?
The Cummins/Onan 6CT8.3G2 engine has an oil capacity of 23.8 liters.
What is the displacement of the Cummins/Onan 6CT8.3G2?
The Cummins/Onan 6CT8.3G2 has a displacement of 8.3 liters with 6 cylinders.
Which generators use the Cummins/Onan 6CT8.3G2 engine?
The Cummins/Onan 6CT8.3G2 powers 2 generator set(s), including Cummins/Onan 122 DGEA, Cummins/Onan DGEA 60 Hz Diesel Generator Set.
How often should you change the oil in the Cummins/Onan 6CT8.3G2?
The Cummins/Onan 6CT8.3G2 oil change interval is every 1000 hours.