The Cummins/Onan 6BTAA-5.9-G2 is a 5.9 L 6-cylinder en línea engine rated at 1500 rpm, producing up to 130 kW. It powers generator sets from AKSA and Cummins/Onan, including the ACD 165 and 6BTAA5.9G2. It holds 34 L (9.0 gal) of oil and 23 L (6.1 gal) of coolant.
Also known as: Cummins 6BTAA-5.9-G2
Part of the Cummins/Onan 6BTAA5.9 engine family — 9 variants share parts & fitment.
| Oil capacity | 34.0 L |
|---|---|
| Coolant capacity | 23.0 L |
| Displacement | 5.9 L |
| Cylinders | 6 |
| Aspiration | En Línea |
| Rated speed | 1500 rpm |
| Gross power | 130 kW |
Shared across brands: AKSA, Cummins/Onan
This engine also powers 1 machine(s) on Power Equipment Info.
How to read your Cummins/Onan engine serial & model number →
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 23.0 L | — | |||
| Oil | 34.0 L | — | |||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Compressor oil | Change | 1000 hr | 24 mo | CPS 11-10 and CPS 11-14: 1000 hours or once in every two years |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
The Cummins/Onan 6BTAA-5.9-G2 engine has an oil capacity of 34.0 liters.
The Cummins/Onan 6BTAA-5.9-G2 has a displacement of 5.9 liters with 6 cylinders.
The Cummins/Onan 6BTAA-5.9-G2 powers 2 generator set(s), including AKSA ACD 165, Cummins/Onan 6BTAA5.9G2.