Water Pump Bracket Replacement
You probably have to replace the mounting bracket as well. Lift with your knees, not your back, as it probably weighs about 200 pounds. The cost for the new pump and bracket would be a few hundred $ less than the 2003 price of the scooter, as the distributor is probably trying to get rid of his entire stock of unreliable brackets, which is to say the scooters themselves.