12V Water Pump
The 12v water pump is a versatile device which unlocks the solution to a number of problems associated with remote or mobile lifestyles. There’s at least one 12v water pump in nearly every caravan, motor home or boat, for example.

Mobile Lifestyle with standard 12v water pump

standard features include 12v water pump
The more unusual applications involve the use of solar power, wind turbines or non-mains water supplies.
If you are in need of several, perhaps many small 12V water pumps for a good price, it may be an idea to go to a boat supply store or a camper van fitters.
Or you may be looking for a 12v water pump to drive up to 4 water misters for maintaining a humid atmosphere in a specialty greenhouse. Wherever you need to pump a fair volume of water and have a car battery. A 12v water pump can pull from a water reservoir and provide cooling hydration through the misters.
Water Cooled Computer System with 12v Pump
Another use for a 12v water pump is in a water cooled computer system. Why would you want to cool a computer with water? Well because the usual electric fan can get too noisy if the processor is busy doing huge amounts of processing work such as rendering video or serving multiple users. Overclocked processors, modified to run faster will also generate a lot more heat and require a water cooling system, usually powered by a 12 volt water pump and a reservoir.
12v Water Pump Cooling system for Computers
Swiftech MCP355™ 12v Water Pump (Native 3/8″) (120 GPH)

You quote the 12 volts but not the amount of current needed to run the pumps and the head would be very useful as well.
I have a bad habit to disagree, but for this one, I agree with some of the information presented.