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The Onan SD20 is a Tier 4–certified, open-set diesel generator designed for applications where space, reliability, and serviceability matter.
Powered by a robust 36 HP Kubota engine, it delivers smooth, low-vibration performance with a compact footprint ideal for tight chassis installations such as mobile command units, medical vehicles, and emergency response fleets.
Multiple interface connection points provide installation flexibility, while a high-efficiency radiator ensures dependable operation in extreme environments up to 59°C (138°F). Backed by over 100 years of Cummins power generation expertise and a best-in-class service network, the SD20 is built for mission-critical uptime.
The Onan SD20 is a Tier 4–certified, open-set diesel generator designed for applications where space, reliability, and serviceability matter.
Powered by a robust 36 HP Kubota engine, it delivers smooth, low-vibration performance with a compact footprint ideal for tight chassis installations such as mobile command units, medical vehicles, and emergency response fleets.
Multiple interface connection points provide installation flexibility, while a high-efficiency radiator ensures dependable operation in extreme environments up to 59°C (138°F). Backed by over 100 years of Cummins power generation expertise and a best-in-class service network, the SD20 is built for mission-critical uptime.