The Cummins/Onan 6BTA5.9-G3 is a 5.9 L 6-cylinder turbocharged and aftercooled engine rated at 1800 rpm, producing up to 154.4 kW. It powers generator sets from Cummins/Onan, including the DGDK and S-1405i. It holds 17.3 L (4.6 gal) of oil.
Part of the Cummins/Onan 6BTA5.9 engine family — 8 variants share parts & fitment.
| Oil capacity | 17.3 L |
|---|---|
| Displacement | 5.9 L |
| Cylinders | 6 |
| Aspiration | Turbocharged and Aftercooled |
| Rated speed | 1800 rpm |
| Gross power | 154 kW |
| Part # | Description | Category |
|---|---|---|
| 3824469 | fuel pump gear puller | fuel_pump |
| 3822509 | injector puller | injector |
| 3823276 | injector bore brush | injector |
| 3377259 | bosch timing tool (ve) | other_service |
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 6BTA5.9-G3 engine has an oil capacity of 17.3 liters.
The Cummins/Onan 6BTA5.9-G3 has a displacement of 5.9 liters with 6 cylinders.
The Cummins/Onan 6BTA5.9-G3 powers 2 generator set(s), including Cummins/Onan DGDK, Cummins/Onan S-1405i.