Somewhere down the line I must have diluted my anti-freeze. Don't remember doing it but it froze. As a result I have stripped threads in my impeller. The rest of the water pump seems to be in good condition but HONDA won't sell just the impeller. Does anyone know if an impeller off another bike will work, or does someone have one laying around their willing to part with for a modest fee? I'd rather use that money on a new drive train for my CR if I can.