I'm not sure I know what part you're talking about either, and I don't know what year/color/options your Versa is, but wouldn't it be easier and more cost effective to buy a complete mirror assembly and replace the whole thing? There are used mirrors on eBay from $40.My daughter was driving the Versa and she hit a trash can with the passenger side mirror. The housing is ok but it popped out the mirror and backing plate.
I need to know where I can find the backing plate as I already ordered the replacement mirror. I tried calling my local nissan parts and they did not seem like the knew what I was talking about.
I found the glass/backing plate at O'Rielly Auto for like 79 bucks but that seems steep.
Any help would be appreciated