Restore your vehicle's cooling system to proper working order, and minimize the risk of premature failure, by installing a Bosch 100% New Water Pump. Bosch Water Pumps are designed to operate in the highly-stressful environment of today's cooling systems. Each pump features 100% new, OEM-quality components. Nothing is remanufactured.
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I purchased this water pump for my Corvette and found it to be of high quality. The unit comes with metal gaskets and was easy to install. No leaks post installation and the car no longer overheats.
Had a tiny leak from day one, a year later the seal gives in during WOT. Couldn't believe that Bosch produces junk, but I guess you get what you pay for.
Update: get a C6 water pump for your C5, I think it may be a design issue. I did, and no leaks after one year.