Part of the Cummins/Onan J120 engine family — 2 variants share parts & fitment.
| Displacement | 1.983 L |
|---|---|
| Cylinders | 4 |
| Aspiration | Air Cooled |
| Part # | Description | Category |
|---|---|---|
| 420A248 | Air filter | Air filter |
| 420P268 | Wrench, Oil Filter - Box Type (For Purolator full flow filter) | Oil filter |
| 4208254 | Driver, Center Camshaft Bearing | Service part / kit |
| 420B270 | Driver, Valve Seat | Service part / kit |
| 420B272 | Onan Tool for Cutting Out Valve Seat | Service part / kit |
| 420B274 | Replacement Bits for 4208272 | Service part / kit |
| 430A252 | Driver, Front Camshaft Bearing | Service part / kit |
| 420B250 | Oil Seal Guide and Driver | Seal |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
This engine powers 1 generator set(s) on Facts About Generators — same parts apply.
The Cummins/Onan J120-S/967F engine powers 1 machine(s), including Caterpillar 8SU.
The Cummins/Onan J120-S/967F has a displacement of 1.983 liters.