In 1947, Continental introduced the C145, a six-cylinder version of the C90.
The U.S. military gave this engine the designation O-300 which Continental later adopted.

models

• O-300A: 145 hp (108 kW)

specifications

• 6-cylinder, horizontally-opposed, air-cooled piston engine
• Displacement: 301 cubic inches (4.9 litres)
• Bore x stroke: 4.0625 x 3.875 inches

used by

• Cessna 170/172