Re: 1960 evinrude
Iboats will not be able to help with that. They will have aftermarket plastic ones that you put inline, but not original porous stone if that is what you want.
It is part number 302062
If you have the original, it can be cleaned. I soak mine in Pinesol, then blow out with compressed air. If you need a new one, expect to pay 15 to 20 bucks.