The Cummins/Onan QSK50 - G24 / G25 is a 49.8 L 16-cylinder turbocharged and charge air cooled engine rated at 1800 rpm, producing up to 2204 kW. It powers generator sets from Cummins/Onan, including the C1750D6E and C2000D6E. It holds 121 L (32.0 gal) of oil and 140 L (37.0 gal) of coolant.
Also known as: Cummins Inc. QSK50 - G24 / G25
Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | Dry replaceable element | | — | | |
| Fuel filter | Two-stage, spin-on fuel filter and water separator system. Stage 1: remote mounted, 5 µm duplex filter with two priming pumps. Stage 2: engine mounted, 3 µm triple element filter | | — | | |
| Oil filter | Four spin-on, combination full flow filter and bypass filters | | — | | |
| Coolant | 140 L (37 US gal) | 140.0 L | — | | |
| Oil | 121 L (32.0 US gal) | 121.0 L | — | | |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Common questions
What is the oil capacity of the Cummins/Onan QSK50 - G24 / G25?
The Cummins/Onan QSK50 - G24 / G25 engine has an oil capacity of 121.0 liters.
What is the displacement of the Cummins/Onan QSK50 - G24 / G25?
The Cummins/Onan QSK50 - G24 / G25 has a displacement of 49.8 liters with 16 cylinders.
Which generators use the Cummins/Onan QSK50 - G24 / G25 engine?
The Cummins/Onan QSK50 - G24 / G25 powers 2 generator set(s), including Cummins/Onan C1750D6E, Cummins/Onan C2000D6E.