Overview#
The Doosan G240 delivers 190 kW of prime power (240 kVA) from a Cummins QSB7-G9 6.7-liter engine — stepping up from the G190 with a higher-output variant of the same proven Cummins platform. The 368-gallon integral tank provides approximately 27 hours of runtime at full load.
At 69 dBA, the G240 uses the DualBox enclosure with separated powertrain and cooling compartments. The Cummins engine ensures wide parts availability and familiar serviceability for rental fleet operators.
Cummins QSB7 platform commonality with G190#
The G240 shares the exact same DualBox enclosure and QSB7 6.7-liter engine platform as the G190. The QSB7-G9 variant extracts 30% more power through higher boost and fueling, delivering 190 kW prime (240 kVA) from the same displacement. For fleet operators running both models, this means common filters, common service procedures, and identical enclosure dimensions.
At 13.5 gal/hr full-load fuel consumption, the 368-gallon tank provides 27 hours of continuous operation — shorter than the G190's 31.7-hour runtime due to the higher fuel burn, but still well above a full 24-hour day. For applications that require more than one day of uninterrupted power, the G240 can accept external fuel connections.
Our service experience#
OnPoint services Doosan G240 units alongside G190s in Northern California — the shared QSB7 platform and DualBox enclosure mean identical service procedures for both models. The G240 is the most popular Doosan model we see in rental fleets at the 200+ kVA class, largely because the Cummins QSB7 is the same engine used across multiple generator brands, which simplifies parts stocking and technician training. The 500-hour oil change interval keeps maintenance costs predictable. For fleet operators deciding between the G190 and G240, the decision comes down to load sizing — there is no penalty in weight or footprint for choosing the higher-output model.
