The Cummins/Onan 6CTAA8.3-G2 is a 8.3 L 6-cylinder turbocharged and cac engine rated at 1800 rpm, producing up to 262.6 kW. It powers generator sets from Cummins/Onan, including the C225 D6, C250 D5, DGFC and DGFS. It holds 23.8 L (6.3 gal) of oil and 25.7 L (6.8 gal) of coolant.
Also known as: Cummins Inc. 6CTAA8.3-G2, 6CTAA8.3-G2
Part of the Cummins/Onan 6CTAA8.3 engine family — 4 variants share parts & fitment.
| Oil capacity | 23.8 L |
|---|---|
| Coolant capacity | 25.7 L |
| Displacement | 8.3 L |
| Cylinders | 6 |
| Aspiration | Turbocharged and CAC |
| Rated speed | 1800 rpm |
| Gross power | 262 kW |
| Part # | Description | Category |
|---|---|---|
| 503-0446 | Clamp, Hose | clamp |
| 503-1134 | Clamp, Hose | clamp |
| 405-5832 | Door, Housing | door |
| 406-0831 | Hinge, Door | hinge |
| 155-3150-04 | Muffler, Critical | muffler |
| 155-3164-05 | Muffler, Critical | muffler |
| 502-0047 | Nipple, Pipe (1/4) | nipple |
| 928-0502B | other_service | |
| 928-0506 | other_service | |
| 960-0504A | other_service | |
| 960-0505 | other_service | |
| 960-12 | other_service | |
| 405-5908 | Panel, Side - Radiator Housing | panel |
| 405-5917 | Panel, End - Roof | panel |
| 155-3164-01 | Pipe, Exhaust | pipe |
| 405-5744 | Post, Housing - Center | post |
| 405-5916 | Post, Corner - Housing | post |
| 800-2072 | Screw, Cap - Hex Head (M8 x 1.25 x 100) | screw |
| 821-6003-02 | Screw, Cap - Hex Head | screw |
| A028Z105 | Sender, Low Coolant | sender |
| 526-0451 | Washer, Flat - Stainless Steel (M8) | washer |
| 319-2653 | Window, Control (If Equipped) | window |
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 6CTAA8.3-G2 engine has an oil capacity of 23.8 liters.
The Cummins/Onan 6CTAA8.3-G2 has a displacement of 8.3 liters with 6 cylinders.
The Cummins/Onan 6CTAA8.3-G2 powers 4 generator set(s), including Cummins/Onan C225 D6, Cummins/Onan C250 D5, Cummins/Onan DGFC, Cummins/Onan DGFS.