The Cummins/Onan S3.8-G6 is a 3.8 L engine rated at 1500 rpm. It powers generator sets from Cummins/Onan.
Also known as: Cummins S3.8-G6
Part of the Cummins/Onan S3.8 engine family — 6 variants share parts & fitment.
| Displacement | 3.8 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.
The Cummins/Onan S3.8-G6 has a displacement of 3.8 liters.
The Cummins/Onan S3.8-G6 powers 1 generator set(s), including Cummins/Onan S3.8-G6.