Well if that impeller is the original one then it looks like it’s pushing 4 years and either way should be replaced. Now if you discover the old one disintegrated then you should pull off the line going to the tranny cooler to clean out the rubber pieces. Now I’m not familiar with the closed loop systems and how they operate so take it FWIW. If you ever ran the boat on the trailer with no water this will kill a impeller in a matter of seconds. Try a fake a lake once you get the new one on to see if it’s working. Hope this helps


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