The Gasuden Jimpu or Kamikaze (later produced by Hitachi) was a Japanese seven-cylinder air-cooled radial aircraft engine from the 1920s, 1930s and 1940s.

It was produced in large numbers to power training and light aircraft before and during the Pacific War.

The early development of aircraft in Japan was fully dependent on engines from abroad, although many of these designs were license built by Japanese companies.

Taking inspiration from the Armstrong Siddeley Mongoose, the company developed a seven-cylinder star-shaped radial made of alloy and using an integral impellor-based carburettor.

[5] The engine had no compressor, although some later models were fitted with a single speed mechanical supercharger to boost performance.