The Cummins/Onan ISB 300* is a 5.9 L 6-cylinder engine rated at 2600 rpm, producing up to 224 kW. It powers generator sets from Cummins/Onan, including the ISB 300. It holds 15 L (4.0 gal) of oil and 9.9 L (2.6 gal) of coolant.
Also known as: Cummins ISB 300*
| Oil capacity | 15.0 L |
|---|---|
| Coolant capacity | 9.9 L |
| Displacement | 5.9 L |
| Cylinders | 6 |
| Rated speed | 2600 rpm |
| Gross power | 224 kW |
How to read your Cummins/Onan engine serial & model number →
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Advertised horsepower | 300 | hp | |
| Other | Advertised horsepower | 315 | hp | |
| Other | Advertised horsepower | 330 | hp | |
| Other | Advertised horsepower | 350 | hp | |
| Other | Advertised horsepower | 370 | hp | |
| Other | Advertised horsepower | 400 | hp | |
| Other | Advertised horsepower | 450 | hp | |
| Other | Advertised horsepower | 500 | hp | |
| Other | Advertised horsepower | 525 | hp | |
| Other | Certification | 2001-CERTIFIED | ||
| Speed | Governed speed | 2000 | RPM | |
| Speed | Governed speed | 2100 | RPM | |
| Speed | Governed speed | 2200 | RPM | |
| Speed | Governed speed | 2600 | RPM | |
| Speed | Governed speed | 2800 | RPM | |
| Torque | Peak torque | 1050 | at 1400 RPM | |
| Torque | Peak torque | 1200 | at 1300 RPM | |
| Torque | Peak torque | 1450 | at 1300 RPM | |
| Torque | Peak torque | 1550 | at 1200 RPM | |
| Torque | Peak torque | 1650 | at 1200 RPM | |
| Torque | Peak torque | 600 | at 1600 RPM | |
| Torque | Peak torque | 660 | at 1600 RPM | |
| Torque | Peak torque | 950 | at 1400 RPM |
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 ISB 300* engine has an oil capacity of 15.0 liters.
The Cummins/Onan ISB 300* has a displacement of 5.9 liters with 6 cylinders.
The Cummins/Onan ISB 300* powers 1 generator set(s), including Cummins/Onan ISB 300.