The Lycoming IO-390 engine is a horizontally opposed, four-cylinder aircraft engine, manufactured by Lycoming Engines. There is no carburetted version of the engine, which would have been designated O-390 and therefore the base model is the IO-390.
El Lycoming IO-390 es un motor aeronáutico de cuatro cilindros horizontales opuestos fabricado por Lycoming Engines. (es)
Der Lycoming IO-390 ist ein Vierzylinderboxermotor für Kleinflugzeuge, der vom US-amerikanischen Unternehmen Lycoming hergestellt wird. Da keine Version mit Vergaser existiert, das die Bezeichnung O-390 hätte, ist der IO-390 das Basismodell. (de)
The Lycoming IO-390 engine is a horizontally opposed, four-cylinder aircraft engine, manufactured by Lycoming Engines. There is no carburetted version of the engine, which would have been designated O-390 and therefore the base model is the IO-390. (en)