This part is a replacement tine row clip for your dishwasher. The tine row clip is adjustable, and it fits onto your dishrack to holds the tines into place. If your dishrack tine rows will not stay in...
We let this go for a shameful amount of time before I decided I could probably fix it. The roller broke so you could only pull it out about halfway or it would come off the track. I looked up the part, and bought it. Actually bought two in case it happened again. When I arrived I looked at how it was put together on the other side and then just basically pushed it onto the rod and it was fixed. I am ashamed it took so long to do it. Never be afraid to try it yourself. It was a total of $10 shipped to fix it.
disconnected inlet hose and water line from sink, removed old inlet valve and installed new valve and reconnected inlet hose and water line from sink - checked for leaks.