The Cummins/Onan X12 is a 12 L wastegate turbo engine rated at 2000 rpm, producing up to 335 kW. It powers generator sets from Cummins/Onan, including the x12. It holds 508 L (134.2 gal) of coolant.
Also known as: Cummins X12
| Coolant capacity | 508.0 L |
|---|---|
| Displacement | 12.0 L |
| Aspiration | Wastegate Turbo |
| Rated speed | 2000 rpm |
| Gross power | 335 kW |
How to read your Cummins/Onan engine serial & model number →
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | — | 40000 hr | |||
| Oil filter | — | 40000 hr | |||
| Oil | Lube oil capacity (with filter) | 45.0 qt/43 L | — | 40000 hr | |
| Spark plug | Valve lash check | — |
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 |
|---|---|---|---|---|
| ELIMINATOR self cleaning filter core | Other | 1500 hr | Requires servicing only every 1,500 hours. Saves up to 90% of lube system maintenance costs and increases productivity. |
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 X12 has a displacement of 12.0 liters.
The Cummins/Onan X12 powers 1 generator set(s), including Cummins/Onan x12.
The Cummins/Onan X12 oil change interval is every 40000 hours.