The most likely failure in my 2001 Box base...

[Jake Raby]

I've seen these water pumps go from "perfect" to failed in about 3 month's time. Preventive WP changes are never wasted money, they are better than a reactionary issue that STARTS at 10K to repair, IF you can find anyone who is willing to sort through the nightmare without just saying "you need a new engine".

I have 8 cars here with cracked heads now and resultant intermix, with one more arriving today. Those people would have paid good money to know about the issue that bit them silently.

The main reason for pump failure is people never flush their coolant and the Ph levels kill the impeller blades.