Introduced in 1940, the O-235 was Lycoming's second horizontally opposed engine; an enlarged version of the successful O-145.
The O-235 is still one of Textron-Lycoming's best-selling piston engines and was the basis of the O-350.

models

•  O-235: 115 hp (86 kW)
• O-235-C1B: 108 hp (80 kW)

specifications

• Horizontally opposed, 4 cylinder, piston engine
• Air-cooled
• Displacement: 233 cubic inches(3.8 litres)
• Bore x stroke: 4.375 x 3.875 inches

used by

• Cessna 152
• Mason JM-1
• Piper PA-22-108 Colt