Product review (4 stars): IceCapades stopper ~
Installed one of these on our 2005-vintage fridge in about 2012 to fix an ice waterfall out of its icemaker and it did.  Problem  reoccurred this year , so I replaced it again but no joy. So I changed out the icemaker, and was glad I did; characteristically, they lose the coating that helps the cubes unstick, and on ours it looked really gross. Plus which, it fixed the water leak!
Supco generally makes good parts and the water valve reviewed here compares well with the OEM.