Curtiss O

Curtiss Model "O" Aero Engine
Replica of a Curtiss Model "O" engine
Type V-8 piston engine
National origin United States
Manufacturer Curtiss Aeroplane and Motor Company
First run 1912
Developed from Curtiss L
Developed into Curtiss OX

The Curtiss O was a 75 hp (56 kW) water-cooled V-8 aero-engine, which was the basis of the commercially successful Curtiss OX series of engines.