The Hitachi Ha-12 was a low-power (150 hp or 112 kW) air-cooled seven-cylinder radial engine. It was known as the Type 95 in Army service.
The Ha-12 powered the Ki-17 "Cedar". It is believed to have been known as both the "Kamikaze" and the "Kimpu" in Navy service, where it was used on trainers such as the K2Y.