The water pump on an EV can be engineered to be significantly easier to maintain/replace - the one in your car is driven by the engine and usually bolted direct

The water pump on an EV can be engineered to be significantly easier to maintain/replace - the one in your car is driven by the engine and usually bolted directly in to your engine. This necessitates some crazy levels of work to get to in some cases. There's also no possibility for a backup on an IC engine, if you water pump dies, you're not running. It would be pretty easy for an electric car to have their simple water pumps cover for each other to provide a limp-home or reduced power-mode.