The Cummins/Onan X2.5-G5 is a 2.5 L engine rated at 1500 rpm. It powers generator sets from Cummins/Onan, including the X2.5.
Also known as: Cummins X2.5-G5
Part of the Cummins/Onan X2.5 engine family — 4 variants share parts & fitment.
| Displacement | 2.5 L |
|---|---|
| Rated speed | 1500 rpm |
How to read your Cummins/Onan engine serial & model number →
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| valve clearance | Check | 2000 hr | B-Series (4BT3.3): valve clearance checks not required for 2000 hours, twice the industry standard | |
| engine overhaul | Other | 20000 hr | QSK23-Series: expected life cycle to 20,000 hours before first overhaul |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Temperature | Limiting ambient temp.** (°C) | 50 | °C | ** @ 13 mm H20 |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | 50% ethylene glycol; 50% water | 11.0 l | Jacket Water After cooled cooling system design |
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 X2.5-G5 has a displacement of 2.5 liters.
The Cummins/Onan X2.5-G5 powers 1 generator set(s), including Cummins/Onan X2.5.