I just changed the water pump on my 2000 Boxster. What a pain in the neck. I got an after market one on ebay and it has the metal blades. What a pain to take out and install. I should have gotten a flex shaft to help me out with the tight squeeze. I hope this one last more than ten years. Only paid $103 with free shipping. Sliced my fingers on the old gasket getting it out. The pump only had three partial blades left and everything else was gone. Never over heated though.