# Yaroslavl Motor Plant

OJSC «Autodiesel» (ОАО «Автоди́зель») known as the Yaroslavl Motor Plant (YaMZ), Russian: Яросла́вский мото́рный заво́д (ЯМЗ), romanized: Yaroslavskyi Motornyi Zavod (YaMZ), based in Yaroslavl, Russia, is an open joint-stock company that produces engines for many Russian companies.

## History

Between 1925 and 1959, YaMZ produced heavy trucks. Back then it was also known as Yaroslavl Automobile Plant (YaAZ, Yaroslavskyi Avtomobilnyi Zavod).

## Trucks and buses

The trucks and buses YaMZ produced included:

### Prewar models

* Ya-3 (1925–1928, based on White-AMO)
* Ya-4 (1928–1929, 4-ton truck powered by a 70 hp Mercedes engine)
* Ya-5 (1929–1934, 5-ton truck powered by a 93.5 hp Hercules YXC engine)
** Ya-5 "Kodzhu" (1933, Ya-5 with a diesel engine)
* Ya-7 (1932, prototype 5-ton truck, powered by a 102 hp Continental 21R engine)
** Ya-7D (1932, Ya-7 with two-speed auxiliary gearbox)
* Ya-8 (1932, prototype lengthened version of Ya-7)
* Ya-9D (1932, prototype 8-ton three axle truck)
* Ya-11 (1942, prototype 2-ton tracked artillery tractor, powered by two 86 hp GAZ-M engines)
* Ya-12 (1943–1946, Ya-11 with a 123 hp GMC 4-71 diesel engine)
* Ya-12D (1933, prototype tractor-trailer based on Ya-7D)
* Ya-13 (1943)
** Ya-13F (1944–1945, production transferred to Plant No. 40 in 1946)
* YaG-3 (1932–1934, 4-ton truck, powered by a 60 hp AMO-3 engine)
* YaG-4 (1934–1936, 5-ton truck, powered by a 73 hp ZIS-5 engine)
* YaG-5 (1934–1935, export version of YaG-4 for Mongolia)
* YaG-6 (1936–1942, 5-ton truck, powered by a 73 hp ZIS-5 engine)
* YaG-6A (1940, YaG-6 with an 82 hp ZIS-15 engine)
* YaG-6M (1938-1940, YaG-6 with a 93.5 hp Hercules YXC engine)
* YaG-6 NATI Kodzhu (1938, YaG-6 with 105 hp diesel engine)
* YaG-7 (1938, prototype 5-ton cargo truck; cancelled due to WWII)
* YaG-8 (1939, as YaG-7 but with a longer wheelbase and carrying capacity increased to 7-ton and powered by a 110–120 hp NATI-MD-23 diesel engine
* YaG-10 (1932–1940, 8-ton three-axle truck)
* YaG-12 (1932, prototype 12-ton four-axle truck based on the YaG-10)
* YaS-1 (1935–1936, 4-ton dump truck version of YaG-4)
* YaS-3 (1936–1942, 4-ton dump truck version of YaG-6)
* YaS-4 (1939, prototype 4.5-ton dump truck based on YaG-7)
* YaSP (1934, prototype half-track based on YaG-4)

### Postwar models

* YaAZ-200 (1947–1950, production moved to MAZ)
** YaAZ-200V (1947?–1950, production moved to MAZ)
* YaAZ-205 (1945–1946, production moved to MAZ)
* YaAZ-210 (1951–1958, first Soviet heavy three-axle diesel truck)
** YaAZ-210A (YaAZ-210 with all metal platform body, prototypes only)
** YaAZ-210D (tractor-trailer version)
** YaAZ-210E (mine truck version)
** YaAZ-210G (ballast tractor version)
* YaAZ-214 (1956–1959, production moved to KrAZ, notable for PMP Floating Bridge)
* YaAZ-218 (1954 or 1957, prototype dump truck)
* YaAZ-219 (1957–1959, production moved to KrAZ; essentially a modified YaAZ-210 with the cab and engine from the YaAZ-214)
* YaAZ-221 (1957–1958, production moved to KrAZ)
* YaAZ-222 (1958–1959, production moved to KrAZ)
* YaAZ-225 (1949, production moved to MAZ and renamed MAZ-525)
* YaAZ-226 (late 1950s, prototype; cancelled in 1958 when truck production was moved to KrAZ)
** YaAZ-227 (dump truck version of YaAZ-226)
** YaAZ-229 (tractor-trailer version of YaAZ-226)
** YaAZ-230 (off-road version of YaAZ-226)

### Buses

* Ya-6 (1929-1932, bus version of Ya-5)
* YaA-2 (1932, prototype)
* YaA-3

### Trolleybuses

* YaTB-1 (1936)
* YaTB-2 (1937)
* YaTB-3 (1938, double-decker)
* YaTB-4 (1938)
* YaTB-4a (1941)
* YaTB-5 (1941)

## Production

YaMZ produces several families of modern engines:
* YaMZ-530 straight 4 and 6 family of engines 120-312 hp (Euro IV ecology standard)
* YaMZ-650 6-cylinder engines with 362-412 hp (Euro III/Euro IV ecology standard)
* YaMZ-840 YaMZ8463 V12

### Marine Diesel engines

* YaMZ-530 marinized version
* YaMZ-850 navalized version
* YaMZ-240 V12
* YaMZ-840 V12

### Tutaev Motor Plant

    Marine Diesel engines
* TMZ-880
* DRA-TMZ " Reka-400 "

### SMZ

    Savelovo Machinery mechanical engineering Plant (Kimry, Tver)

### Historic engines

* YaAZ-204 inline-4 licence-built Detroit Diesel Series 71 engine
* YaAZ-206 inline-6 Detroit Diesel Series 71 engine
* YaMZ-236 V6
* YaMZ-238 V8
* YaMZ-240 V12