The Nakajima Sakae is a Japanese aircraft engine developed by Nakajima Aircraft Company during World War II. It is a 14-cylinder, air-cooled radial engine known for its reliability and power. The Sakae engine was primarily used in several notable aircraft, including the Mitsubishi A6M Zero and the Nakajima Ki-43 Hayabusa. This engine played a significant role in the performance of Japanese fighter planes, contributing to their agility and speed in combat. The Nakajima Sakae was produced in large numbers, making it one of the most important engines in the Imperial Japanese Navy's aviation history.