The Cummins/Onan X3.3-G1 is a 3.3 L 4-cylinder naturally aspirated engine rated at 1500 rpm. It powers generator sets from Cummins/Onan. It holds 6.8 L (1.8 gal) of oil and 11 L (2.9 gal) of coolant.
Also known as: Cummins X3.3-G1
Part of the Cummins/Onan X3.3 engine family — 3 variants share parts & fitment.
| Oil capacity | 6.8 L |
|---|---|
| Coolant capacity | 11.0 L |
| Displacement | 3.3 L |
| Cylinders | 4 |
| Aspiration | Naturally aspirated |
| 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.
The Cummins/Onan X3.3-G1 engine has an oil capacity of 6.8 liters.
The Cummins/Onan X3.3-G1 has a displacement of 3.3 liters with 4 cylinders.
The Cummins/Onan X3.3-G1 powers 1 generator set(s), including Cummins/Onan X3.3-G1.