Closed Loop System for GT40 for sale. Came off my '99 196. Bought in 2015 from PlanetNautique. Great shape, All parts included for a full installation.
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Engine cooling is closed loop. There is no impeller sucking water from the bottom of the boat. There is also no exhaust water. The system is self contained.Originally posted by chefred112 View Postwhat is a closed loop system?...what does it do?
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