Figured I'd share this with anyone whose replacing seals in the timing belt area. You will NEED this part when replacing that seal or it will just pop out again. If you call Honda and ask them for it, it won't be in the search. You will have to give them the part number for them to order it. I've also seen it on the dorman parts site and a couple others too.

Balancer shaft seal retainer part # 06923-P0A-306