Where to buy air filter housing clasp, 2013 V

Not sure if this helps. I did a quick look at my dealer's part's site. Part #3 in the diagram below is for the whole cover. Pretty pricey at $337.10. Even a used cover on ebay is $100, and no guarantee you get the clip you want with it.

I did find these clips on eBay, that should work. They come from china, so it will take a month to get them:
2 Car Air Filter Cleaner Housing Box Lid Spring Clip Clamp for Toyota | eBay

The "compatibility" widget of the Listing said they would fit a 2013 Prius V, and at less than $10 incl shipping for 2 of them, worth a gamble.

2 Car Air Filter Cleaner Housing Box Lid Spring Clip Clamp for Toyota









https://parts.conicellitoyotaofconshohocken.com/oem-parts/toyota-2010-2017-toyota-cover-1770537131

2010-2017 Toyota Cover - Toyota (17705-37131)

 

I was about to say "boneyard", but "new replacement from China" seems like it would work too.