Mikulin M-17

M-17
Type	Liquid-cooled V12 engine
National origin	Germany
Manufacturer	Factory No. 26
First run	1930
Major applications	Tupolev TB-3, Polikarpov R-5, Beriev MBR-2
Produced	1930–41
Number built	27,534[1]
Developed from	BMW VI
Developed into	Mikulin AM-34

The Mikulin M-17 was a Soviet-licensed copy of the German BMW VI V-12 liquid-cooled aircraft piston engine, further developed by Alexander Mikulin and used by Soviet aircraft and tanks during World War II. Production began in 1930 and continued until 1942. More than 27,000 were produced, of which 19,000 were aircraft engines while the rest were used in Soviet tanks of the period.