Power parts, including engines and peripheral parts [such as starters, generators, superchargers, various filter elements, etc.
Driving Part, also called transmission part], including clutch, gearbox, transmission shaft, axle, etc.;
Suspension part, including front and rear steel plates and fasteners, balance shaft, thrust rod, etc.
Steering part, including steering gear and Horizontal pull rods, etc.
Electrical appliances and valve parts, including various types of electrical switches, wiring harnesses, bulbs, and various braking components (valves).
Control and cargo parts, namely cab and cargo compartment.
Frame [that is, the beam] and so on.