Looks like a short add-a leaf. I'd be willing to bet its from pro-comp just for the fact that they make a shiat ton of those for everything. Either pull them both out or grab a set of replacements. If going with aftermarket replacements I'd suggest getting a pro-comp LONG add-a leaf. Much better ride and they won't break.
![Wink ;)](https://board.marlincrawler.com/Smileys/marlin/wink.gif)