I'm refurbishing the sink, tank and pump on my boat. If you're looking for a replacement for the hand pump I found it- the Leisure Components 131 2 way. You can buy a rebuild kit for it, but I chose to just replace the whole, nasty thing with a new one. The original is a Shurflo 130, but this one appears to be the exact model, the only one I could find that had the low profile, which might be necessary for sliding the sink back under the cockpit. If you want to convert to electric, there is another model the 3 way, which can be used manually or electrically.