The Liberty V-1650 is an aircraft engine developed during World War II. It is a V-type, liquid-cooled engine that was based on the earlier Liberty L-12 design. The V-1650 was primarily used in military aircraft, providing reliable power and performance for various models, including the famous P-51 Mustang. This engine features a displacement of 1,650 cubic inches and produces around 1,200 horsepower. Its design allowed for efficient operation at high altitudes, making it suitable for fighter planes. The Liberty V-1650 played a significant role in enhancing the capabilities of Allied air forces during the war.