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Hey guys so never have posted here before but kinda stuck right now. I had my water pump go out on my 06 5.9 yesterday coming back from an ice fishing trip didn’t realize much issues, but on the way back the temperature rose really quick and realized the smoke barreling out of the hood so immediately pulled off to the side of the road and shut it down. After looking around for a bit I realized where all my coolant had been coming from the bottom side of my water pump. Anyhow I pulled it off this morning after putting it on a trailer and getting it home and realized all the impellers had broken off I have found 2 as of now and I’ve drained it from the top after pulling off hoses and still nothing I’m kinda stuck on where the other 3 fins could be any kinda help would be awesome thanks
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They would be in the block. Idk why they went to plastic impellers
 

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That’s what I was worried about but the impellers aren’t plastic and so far the 2 I have found are to big to travel through the coolant lines in the engine block itself but maybe I’m wrong
 

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I haven’t heard of metal impellers breaking.
 

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Pretty common for the coolant pumps to fail, (bearings) around 140k miles, like mine, but never heard of the impellers breaking off. Mine took out the serpentine belt with it. A friend had the same experience with his. We both have the 6.7l, but the pumps should be the same.
Did your serpentine belt break? If not maybe it continued spinning the pump with bad bearings and the prolonged wobble caused them to contact surfaces around them? Just a guess.
Good luck getting all the pieces out. You might think about a Dodge or Cummins dealer for help. They might have experience with your problem. Also if they flush it out and replace the pump for you their work should be warranted.
 

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Had a friend that lost 3 of the fins on his waterpump and ended up finding them in the engine oil cooler behind the oil filter.
Fairly involved job getting to them though.
 
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