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Old 06-16-2013, 08:23 AM
bigmac bigmac is offline
MC Platinum
Join Date: Jun 2005
Boat: 2004 Maristar 230 VRS
Location: Central Minnesota
Posts: 8,126
Yah, that's tight quarters. All you need is a hose barb for a 5/8 line. On the MCX, there's a 45 degree angled brass fitting and a valve. That is the place where you want your supply line.

The return line is a similar plug on your engine's circulating pump. Depending on the boat, might be kind of hard to get to. IMHO, using a Y-pipe for the return line is easier to deal with and additionally is more effective in that it creates far better heat output at idle or low RPM.

'04 MariStar 230VRS/MCX
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