I was changing my pads the other day and noticed that the caliper piston has a spacer that inserts into the piston which then contacts the backing of the brake pad. The caliper and spacer are made by ATE.
After succesfully changing the pads on one side, i took off the pads from the other side to have this spacer break apart into several pieces.
So my question is: Is this part replaceable on its own, and if so ,where can i find it? Is it possible to drive the car without the spacer without causing any damage?