The Cummins/Onan QSB 4.5 Series is a 4.5 L 4-cylinder turbocharged and charge-air cooled engine rated at 1470 rpm. It powers generator sets from Cummins/Onan, including the CFP5E-F10, CFP5E-F20, CFP5E-F30 and CFP5E-F40. It holds 11.6 L (3.1 gal) of oil and 12.3 L (3.2 gal) of coolant.
Also known as: Cummins QSB 4.5 Series
Part of the Cummins/Onan QSB 4.5 engine family — 2 variants share parts & fitment.
| Oil capacity | 11.6 L |
|---|---|
| Coolant capacity | 12.3 L |
| Displacement | 4.5 L |
| Cylinders | 4 |
| Aspiration | Turbocharged and Charge-Air Cooled |
| Rated speed | 1470 rpm |
| Part # | Description | Category |
|---|---|---|
| CC900G | Parking brakes, Horn, Hour meter, Ignition key, Propulsion in both drums, Foldable ROPS (incl. seat belt), Seat safety switch, Sliding operator seat, Towing eyelet (front/rear), Vibration on front drum, Cup Holders, Carbon Canister, Fuel Level gauge | belt |
| CC950 | Emergency stop, Horn, Hour meter, Ignition key, Propulsion in both drums, Foldable ROPS (incl. seat belt), Seat safety switch, Sliding operator seat, Towing eyelet (front/rear), Vibration on front drum, Warning light for brakes, Cup Holders, Low Fuel level meter, LED working lights | belt |
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 QSB 4.5 Series engine has an oil capacity of 11.6 liters.
The Cummins/Onan QSB 4.5 Series has a displacement of 4.5 liters with 4 cylinders.
The Cummins/Onan QSB 4.5 Series powers 10 generator set(s), including Cummins/Onan CFP5E-F10, Cummins/Onan CFP5E-F20, Cummins/Onan CFP5E-F30, Cummins/Onan CFP5E-F40, Cummins/Onan CFP5E-F50.