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The problem earlier with metal impeller water pumps was quality control and shoddy manufacturing. From my understanding, DeutscheParts on ebay was selling the water pumps. Mind you, these were no-name generic water pumps made in China that had documented problems of them breaking only after 3,000 miles!
Heiko is going with Geba, a name brand and renowned parts manufacturer, which has to pass TUV standards. I would not paint all the metal impeller pumps with the same brush. One is made by an auto parts company with years of experience, one is made by who knows who? I would feel confident enough with a Geba pump that I would be fine with one inside my engine. The potential of metal to metal contact can raise concern, but with stricter manufacturing tolerances, and higher quality materials, I think the issue of the pump destroying components should not manifest itself during it's service life.
Last edited by Kenny Boxster; 03-18-2013 at 09:56 AM.
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