O-145-A Four-cylinder, direct drive, 55 hp (41 kW), single ignition[2] 0-145-A3 Four-cylinder, direct drive, 55 hp (41 kW), single ignition, with starter and generator installed[3] O-145-B1 Four-cylinder, direct drive, 65 hp (48 kW), single ignition[1] O-145-B2 Four-cylinder, direct drive, 65 hp (48 kW), dual ignition[1] O-145-B3 Four-cylinder, direct drive, 65 hp (48 kW), dual ignition[1] O-145-C1 Four-cylinder, direct drive, 75 hp (56 kW), single ignition[1] O-145-C2 Four-cylinder, direct drive, 75 hp (56 kW), dual ignition[1] GO-145-C1 Four-cylinder, reduction gearbox, 75 hp (56 kW), single ignition[1] GO-145-C2 Four-cylinder, reduction gearbox, 75 hp (56 kW), dual ignition[1] GO-145-C3 Four-cylinder, reduction gearbox, 75 hp (56 kW), dual ignition[1]