The Cummins/Onan 2.5LK is a 0.41 L 1-cylinder natural engine rated at 1800 rpm, producing up to 2500 kW. It powers generator sets from Cummins/Onan, including the 2.5L. It holds 1 L (0.3 gal) of oil and 20 L (5.3 gal) of coolant.
Also known as: ONAN 2.5LK
| Oil capacity | 1.0 L |
|---|---|
| Coolant capacity | 20.0 L |
| Displacement | 0.41 L |
| Cylinders | 1 |
| Aspiration | Natural |
| Rated speed | 1800 rpm |
| Gross power | 2500 kW |
How to read your Cummins/Onan engine serial & model number →
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | N/A | — | 500 hr | ||
| Fuel filter | N/A | — | 500 hr | ||
| Oil filter | N/A | — | 500 hr | ||
| Battery | 12-V | — | 500 hr | ||
| Belt | N/A | — | 500 hr | ||
| Oil | SAE SW-10W | 1.6 L | — | 500 hr | |
| Spark plug | N/A | — | 500 hr |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
The Cummins/Onan 2.5LK engine has an oil capacity of 1.0 liters.
The Cummins/Onan 2.5LK has a displacement of 0.41 liters with 1 cylinders.
The Cummins/Onan 2.5LK powers 1 generator set(s), including Cummins/Onan 2.5L.
The Cummins/Onan 2.5LK oil change interval is every 500 hours.