Quote:
Originally Posted by bobaachaar
didn't specify, the brass one is the new one that he put in. don't think it's OEM but the impeller is a more durable material.
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Mistake. The factory impeller is plastic for a reason: all pumps wear and begin to wobble, when they do, the plastic impeller hits the rear of the pump housing and breaks off, but the metal impeller starts grinding away the rear of the housing, which is part of the engine case, filling the system with metal filings and increasing the distance between the impeller and the case to the point it reduces coolant flow. This damage cannot be repaired, and why the factory uses composite impeller pumps.............
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Last edited by JFP in PA; 02-13-2023 at 07:35 AM.
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