The Cummins/Onan QSB7 series is a 6.69 L 6-cylinder direct injection: number 2 diesel fuel, fuel filter, automatic electric fuel shutoff engine rated at 1800 rpm, producing up to 125 kW. It powers generator sets from Cummins/Onan, including the C125 D6D, C150 D6D, C175 D6 and C200 D6. It holds 2 L (0.5 gal) of oil.
Also known as: Cummins QSB7 series
Part of the Cummins/Onan QSB7 engine family — 7 variants share parts & fitment.
| Oil capacity | 2.0 L |
|---|---|
| Displacement | 6.69 L |
| Cylinders | 6 |
| Aspiration | Direct injection: number 2 diesel fuel, fuel filter, automatic electric fuel shutoff |
| Rated speed | 1800 rpm |
| Gross power | 125 kW |
How to read your Cummins/Onan engine serial & model number →
| Part # | Description | Category |
|---|---|---|
| A047M180 | Filter, Air − Normal Duty | air_filter |
| A054E584 | Filter, Air − Heavy Duty | air_filter |
| A055Z870 | Filter, Air − Replacement − Heavy Duty | air_filter |
| 4915973 | Alternator Manual | alternator |
| 0908-0110-00 | Health and Safety (Diesel Generator Sets) | other_service |
| 518-0601 | Sealant, Thread (6 ml Tube) | 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 QSB7 series engine has an oil capacity of 2.0 liters.
The Cummins/Onan QSB7 series has a displacement of 6.69 liters with 6 cylinders.
The Cummins/Onan QSB7 series powers 10 generator set(s), including Cummins/Onan C125 D6D, Cummins/Onan C150 D6D, Cummins/Onan C175 D6, Cummins/Onan C200 D6, Cummins/Onan DSGAA.