The Cummins/Onan 6CT8.3-G is a 8.3 L 6-cylinder engine, producing up to 100 kW. It powers generator sets from Cummins/Onan, including the 100DGEA, 125 DGEA and DGEA. It holds 19 L (5.0 gal) of oil and 26 L (6.9 gal) of coolant.
Part of the Cummins/Onan 6CT8.3 engine family — 4 variants share parts & fitment.
| Oil capacity | 19.0 L |
|---|---|
| Coolant capacity | 26.0 L |
| Displacement | 8.3 L |
| Cylinders | 6 |
| Gross power | 100 kW |
| Part # | Description | Category |
|---|---|---|
| 140-2240 | Cleaner, Air - Includes Element(s) | air_filter |
| 140-2241 | Element, Air Cleaner - Standard (Outer) | air_filter |
| 140-2252 | Element, Air Cleaner - Heavy Duty (Inner) | air_filter |
| B-45 | CHECKING BATTERY | battery |
| 502-1265 | Hose, Drain | hose |
| LF3000 | Lube, Spin-On | oil_filter |
| LS1174s | OIL FILTER | oil_filter |
| 850-2008 | Heater, Engine Coolant | other_service |
| 308-0913 | Kit, Repair - Fuel Tank Pump (includes Lip Seal, Bearings, Gasket, Drive Gear, Idle Gear, Coupler) | pump |
| 399-0117 | Pump, Fuel Tank (P103) | pump |
| 193-0448 | Sender, Oil Pressure (Includes Parts Marked *) | sensor |
| 309-0553 | Switch, Temperature - Low Engine Coolant (S4) | sensor |
| 309-0554 | Switch, Oil Pressure - 20 PSI (S5 Pre-Alarm) | sensor |
| 503-0183 | Clamp, Hose | sensor |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Cummins/Onan 6CT8.3-G engine has an oil capacity of 19.0 liters.
The Cummins/Onan 6CT8.3-G has a displacement of 8.3 liters with 6 cylinders.
The Cummins/Onan 6CT8.3-G powers 3 generator set(s), including Cummins/Onan 100DGEA, Cummins/Onan 125 DGEA, Cummins/Onan DGEA.