Part number ?

[suprahabsfan]

I bought a radiator cap part number 16401-72090, which is just slightly too small, and i need a part number for the slightly bigger one. I don't want to go to the store, and say i need a slightly smaller one, because I know I'll wind up with the wrong part.

any help?

 

[Keros]

I vaugly recall a thread on this a few days ago... have a search around, I'm sure you could find it.