02 - Made of grey cast iron according to GOST 1412-85 by casting and milling on a CNC machine. Often called the engine cover or simply the top cover. Depending on the version, it is used to mount AIR90L4, AIR100S4 and AIR100L4 motors for TSN.00.136-01, as well as AIR80V6 and AIR80V4 motors for TSN.00.136-02. Together with the TSN.00.107 housing, they form an oil bath for the gearbox gears.