I replaced my OEM wipers with some Rain-X brand wipers. And, for the second time, my passenger side wiper keeps coming off of the hook. I can't figure out why. The driver's side works perfectly. When I put the passneger side wiper on, I can jiggle it to try to get it to come off, but it won't. When I actually use the wipers in the rain, it comes loose. I'm on my second wiper, so hopefully I didn't get 2 bad ones in a row. Here is a pic of what it looks like when it comes loose. I can hear a click when I slide it over the hook, so I know it is installing correctly. Any ideas?

 

Not sure why but you can buy and replace the entire arm.

 

put the one from the passenger side on the driver side and if is loose there is bad if not then your arm might be bad