What are these motor cups?

Does anyone know what our friends water engine cups do and how we can understand if they break down?

Master motor cups were broken after a test drive in the service last month, but I don't know how many 2-3-5. He said that all of them should change, 16 of them seemed to have a total cost of 800 TL.

Since I am in Cyprus, everything is more expensive than normal, is the price normal?

how do we know about it? i want to make sure that the cups are broken.

I'm going there I take from this 16 piece cups turkey soon and tau new revenue, I think it calls more cheaply in cyprus

As far as I know, the main name is the valve cup, it is used to keep the movement of the valve in a certain way, it is a long life part.