Greetings,
The best advice i can give you for fixing this issue is that you will likely have to purchase that entire unit from either a dealership, junkyard or parts house. I have heard them called "Wings and fingers" again though its gonna be really hard to source that original part of a part and there is a reason the other one fell out.
I took a cursory look for you and did locate a number of them on Ebay that look to be exactly the same as yours and can be purchased for reasonable prices.
They are all hovering around 65-75$
https://www.ebay.com/itm/204378630840?chn=ps&mkevt=1&mkcid=28&srsltid=AfmBOoo7-o9f9XiwqsiHUNBxJCiJ_6YzFd_sXM0oUk3l09CoQKUnNOHimwo
I hope this helps!!
Cheers!!
Monte