470uf 16v to 330uf 16v ok?
 

My ESC capactior need be replacing. 470uf 16v to 330uf 16v ok safe to use?

or i should buy 470uf or better ?

I would rather go higher on the micro farads ( uf ) rather than lower so replace it with 470uf or higher, trying to keep the voltage rating the same, if not go slightly higher on the voltage rating as well depending what you have or can get:)

Are they single caps, or a circuit board? if on a board, how many caps total? 2, 4, etc?