The Cummins/Onan QSB7-G4 is a 6.7 L engine rated at 1500 rpm. It powers generator sets from Cummins/Onan, including the QSB7.
Also known as: Cummins QSB7-G4
Part of the Cummins/Onan QSB7 engine family — 9 variants share parts & fitment.
| Displacement | 6.7 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.
| Part # | Description | Category |
|---|---|---|
| A047M180 | Filter, Air − Normal Duty | Air filter |
| A054E584 | Filter, Air − Heavy Duty | Air filter |
| A055Z870 | Filter, Air − Replacement − Heavy Duty | Air filter |
| 4915973 | Alternator Manual | Alternator |
| 0908-0110-00 | Health and Safety (Diesel Generator Sets) | Service part / kit |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Cummins/Onan QSB7-G4 has a displacement of 6.7 liters.
The Cummins/Onan QSB7-G4 powers 1 generator set(s), including Cummins/Onan QSB7.