I ordered some OEM camshaft seals for my b18a1. I got them in today and was inspecting them. Ofcourse packaging was very good, was already pre-greased to slide on camshafts. If you look closely you can see were is says 2.2 on one, and 2.4 on the other. Is this a size reference so i know which one to put on IN camshaft and EX camshaft? I don't want to put em on and keep leaking oil from the camshafts.

 

They should both be the same. just put them over each other and see if there the same size if there not then they might have sent the wrong ones or mixed them up, were they oem seals?

The correct way to install them is to install the cams and cam caps then put a thin layer of honda bond around the seal and tap them into the cam holes till its flush with the surface. Use a big socket thats the same diameter of the seal to evenly push it in the hole.