Replace part that keeps drawer from falling out?

Hi I think what I need is some kind of replacement part that screws into the front of the dresser (see first picture) that Kees the drawer from falling out too easily. A drawer stop?? Any help would be appreciated. Plastic part that is still intact on the back of the drawers in second picture says "kenlin" and "A12"
Thank you!

Thanks I bought both parts ...hopefully they will work!

THANK YOU THANK YOU!!
This was the solution on how to fix my broken drawers on Stanley furniture that I bought cheap on Craigslist! And it was less than $25 to fix all 5 drawers.
I replaced all the runners (that was the key!!) and that took less than a minute each.
I also replaced most of the sockets. Some of the old broken sockets I had to keep because otherwise due to a slight weirdness in the thickness of the metal rails the new intact socket wouldn't fit over the runner. I am not going down the road of replacing the old rails because most of the drawers now work perfectly, and the "half fixed" ones still are unmeasurably better than before.