Specifications
| Fuel | Diesel |
|---|---|
| Standby power | 20 kW |
Maintenance & consumables
for the Cummins/Onan 4BT3.9-G| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil filter | — | find |
Common questions
What is the power rating of the Cummins/Onan 20QSA?
The Cummins/Onan 20QSA is rated 20 kW standby.
What engine does the Cummins/Onan 20QSA use?
The Cummins/Onan 20QSA is powered by the Cummins/Onan 4BT3.9-G engine.
What fuel does the Cummins/Onan 20QSA use?
The Cummins/Onan 20QSA runs on Diesel.
Parts
4| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 110-0426 | Water Pump | 1 | Pump | PartsGeek |
| 110-0430 | Seal, Water Pump | 1 | Seal | PartsGeek |
| 140-0705 | Oil Filter | 1 | Oil filter | PartsGeek |
| 140-0710 | Air Cleaner, Standard | 1 | Air filter | PartsGeek |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Parts manual — 943-0257 Onan QSA (spec A-B) Genset Parts manual (06-1993) (Cummins/Onan)