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Cummins/Onan QSB5-G3 Engine Engine

The Cummins/Onan QSB5-G3 is a 4.5 L 4-cylinder turbocharged, charge air cooled engine rated at 1800 rpm. It powers generator sets from Cummins/Onan and MQ Power, including the DSFAA, DSFAB, DSFAC and DSFAD. It holds 12.1 L (3.2 gal) of oil and 17 L (4.5 gal) of coolant.

Part of the Cummins/Onan QSB5 engine family — 7 variants share parts & fitment.

4.5 L
Displacement
4
Cylinders
1800 rpm
Rated speed
12.1 L
Oil capacity

Engine specifications

Oil capacity12.1 L
Coolant capacity17.0 L
Displacement4.5 L
Cylinders4
Aspirationturbocharged, charge air cooled
Rated speed1800 rpm

Generator sets powered by this engine

7

Shared across brands: Cummins/Onan, MQ Power

Cummins/Onan DSFAACummins/Onan DSFABCummins/Onan DSFACCummins/Onan DSFADCummins/Onan DSFAEMQ Power EGS500C3MQ Power EGS700C3

Common questions

What is the oil capacity of the Cummins/Onan QSB5-G3?

The Cummins/Onan QSB5-G3 engine has an oil capacity of 12.1 liters.

What is the displacement of the Cummins/Onan QSB5-G3?

The Cummins/Onan QSB5-G3 has a displacement of 4.5 liters with 4 cylinders.

Which generators use the Cummins/Onan QSB5-G3 engine?

The Cummins/Onan QSB5-G3 powers 7 generator set(s), including Cummins/Onan DSFAA, Cummins/Onan DSFAB, Cummins/Onan DSFAC, Cummins/Onan DSFAD, Cummins/Onan DSFAE.