I received the new parts today. On the last photo, you can see the difference between the new bolt that turns the latch compared to the old one. The square part of the bolt that fits into the latch itself is what broke off. I think the new one might have a little more of that squared piece that fits into the latch so it's less likely to break again. Note, I'm not talking about the bigger square part that the t-handle key fits onto, that's definitely bigger.
I wasn't expecting the part that shows on the outside of the camper, so maybe the kit was worth the money. It has more parts than I expected.
New Parts out of the bag:
In the bag:
Old bolt (broken off at bottom) vs new bolt.