The Franklin O-200 (company designation 4AC-199) was an American air-cooled aircraft engine of the early 1940s.

The engine was of four-cylinder, horizontally-opposed layout and displaced 200 cu in (3 L).

The power output ranged between 65 hp (48 kW) and 100 hp (75 kW) depending on variant.

The O-200-5 (4ACG-199) featured a geared propeller drive.

Data from [citation needed] Comparable engines Related lists