The belt roller (in the middle) is making noises now. Bad bearings!
Replacement part is 5751.G3.
New design with plastic material.
Just a picture of the auxiliary drive belt 5750.KX.
The main pulley is also broken. The pulley is constructed from 3 rings which are tightly fitted to each other...
...but this one is loose and the rings are slipping, as evidenced by the misalignment of the white marker on the rings. When it gets wet in the rain, the rings slips and does not drive the power steering pump and alternator, resulting in loss of power steering and a drained battery.
It is so loose that the pieces can be separated easily by hand.