The Wright R-3350 is a twin-row, air-cooled radial aircraft engine developed in the 1940s. It features 18 cylinders arranged in two rows of nine, providing a displacement of 3,350 cubic inches. This engine was known for its reliability and power, making it suitable for large aircraft during and after World War II. The R-3350 was widely used in several notable aircraft, including the Douglas DC-7 and the Lockheed Constellation. It produced up to 2,500 horsepower, allowing these planes to achieve long-range flights and carry significant payloads. Its design contributed to advancements in aviation technology during its time.