the model contains a chassis, with 4x4, and a U4000 Cab. the model itself only has Drive/steer as functions. but with some creativity, you can build plenty of funtions to it.
like the real U4000, this model has a 4L engine, placed underneat the cab, just like the real one.
the model got live axles in front and rear, with full suspension.
as a final touch, the model has a trailer hitch at rear.
since the 42043 set only has, 1 CV-joint, and 2 U-joint, you will need to add another CV-joint, to connect drivetrain with the front axle.....
Have fun building it.