We have a 2013 C&C service truck with around 100k thats gone through 3 or 4 waterpumps already, they have been OEM mopar and napa pumps. This last OEM one locked up solid.
Typically using
CAT ELC coolant
Mechanic/driver of the truck has been changing them, no obvious signs of bad install , havent seen any chunks or pieces floating around and old impellers are not damaged.
Made sure to burp system well also.
Anything were missing here?