The Cummins/Onan 6BTA5.9-G2 is a 5.9 L 6-cylinder turbocharged engine rated at 1500 rpm, producing up to 116 kW. It powers generator sets from AKSA and Cummins/Onan, including the ACD 150, 6BTA5.9G2, C110 D5 and C145D6. It holds 16.4 L (4.3 gal) of oil and 10.5 L (2.8 gal) of coolant.
Also known as: Cummins 6BTA5.9-G2
Part of the Cummins/Onan 6BTA5.9 engine family — 10 variants share parts & fitment.
| Oil capacity | 16.4 L |
|---|---|
| Coolant capacity | 10.5 L |
| Displacement | 5.9 L |
| Cylinders | 6 |
| Aspiration | turbocharged |
| Rated speed | 1500 rpm |
| Gross power | 116 kW |
Shared across brands: AKSA, Cummins/Onan
| Part # | Description | Category |
|---|---|---|
| 191-1983-02 | Alternator, 24 Volt Spec B-O (Prestolite) | alternator |
| 191-i981.1 | Alternator, 24 Volt Spec E-H (Bosch) | alternator |
| 960-0136 | Battery, 24V, 55Ah, AGM | battery |
| 3824469 | fuel pump gear puller | fuel_pump |
| 3822509 | injector puller | injector |
| 3823276 | injector bore brush | injector |
| 3377259 | bosch timing tool (ve) | other_service |
| 928-0502B | other_service | |
| 928-0506 | other_service | |
| 960-0504A | other_service | |
| 960-0505 | other_service | |
| 960-12 | other_service | |
| 191-i962-02 | Starter, Negative Ground 24 volt Spec B-F | starter |
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-G2 engine has an oil capacity of 16.4 liters.
The Cummins/Onan 6BTA5.9-G2 has a displacement of 5.9 liters with 6 cylinders.
The Cummins/Onan 6BTA5.9-G2 powers 4 generator set(s), including AKSA ACD 150, Cummins/Onan 6BTA5.9G2, Cummins/Onan C110 D5, Cummins/Onan C145D6.