Water pump lasts how long

if you buy a new, top quality pump it should last years and years. if you buy a cheap rebuilt pump, it may last a year or less. this is why the cheap pumps are sold to the public; however, most shops will not install anything but a top quality pump.

The timing belt should be relaced evey 100k miles. CHange the waterpump at the same time even if it is not showing signs of needed replacement. It will save $$ down the road