Hirth HM 504

The Hirth HM 504 is a four-cylinder air-cooled inverted inline engine. The HM 504 was a popular engine for light aircraft of the 1930s-1940s, and it was used to power a number of Germany's trainer aircraft of World War II. The engine featured a cast magnesium alloy crankcase made of Elektron The Hitachi Hatsukaze Model 11 was a Japanese licensed version.

Applications

 * Arado Ar 79
 * Bücker Bü 131
 * Bücker Bü 181
 * BŻ-1 GIL (helicopter)
 * Klemm Kl 35
 * Matra-Cantinieau MC-101 (helicopter)
 * Morane-Saulnier MS.603
 * Payen Arbalète
 * Repülőgépgyár Levente II