water pump going out on 1999 Mercedes-Benz E320

I noticed it when I started the motor. Mechanic found the
belt moving and shaking the pump. How much for the water
pump and labor?

Asked by for the 1999 Mercedes-Benz E320
if you are NOT at the Benz dealer, you can most likely
get a new aftermarket pump, thermostat and coolant for about $600, double that if you go to MB. do not consider
a "reman" pump or not replacing the stat.