no : Those small black items on the water lines are "one way valves"-- not filters. You'll have to get another brand as those (one ways) are no longer made.
Pictures of the old and new are included in this thread, one on each page:
http://c34.org/bbs/index.php/topic,4114.0.htmlNo not talking about any one way valves. My boat apparently has an additional water filter for the head sink, cold side only, for reason's unknown. I did have a one-way valve that I found when I worked on the shower sump, but it didn't look like those black ones. Mine was some home-brew I think. There's a thread about it somewhere.
These are the filters on my boat: (you can see a similar housing in the link)
http://www.waterfilters.net/Culligan-Pentek-C2-Water-Filter.htmlGetting over some kind of nasty bug, so all my projects have been piling up, along with work and everything else! Gotta love it!