I just ordered a transmission case for my b16 tranny and I am planning to swap out the old one due to a crack where the oil seal goes. There's also some metal ring/washer type thing where the oil seal goes to, I was wondering if that was a seperate part or would it come w/ the transmission case? any help would be great.

 

It's a shim, and it's sold separately. Enter your year/make/model here and you can find diagrams that will explain everything: https://www.hondaautomotivepar...h.jsp