What Is  Car's Water Pump And What Does It Do?

What Is Car's Water Pump And What Does It Do?

A water pump is an important part of a car's engine because it ensures the coolant keeps moving through the engine block, hoses and radiator. The water pump maintains the correct operating temperature and is driven by a serpentine belt, also known as an accessory belt or auxiliary belt from the crankshaft pulley.

Once the water has flowed around the engine, it then flows through the hoses to the radiator (usually at the front of the car).  The hot water is cooled by the movement of air over the radiator's fins and then withdraws from the radiator and flows back into the water pump, where the process is repeated.

What is a water pump and why is it important?


The water pump is a part of your car playing an important role in the engine's cooling system. The role of the water pump is to cool down the engine with coolant, which in turn helps to make sure the engine does not overheat. Engine overheating is very dangerous for your car and could lead to subsequent engine failure.

How do you maintain a water pump?


Maintaining your cars water pump is simple.  You need to ensure the engine coolant is in good condition and has the correct amount of antifreeze. Having the correct amount of antifreeze stops the water from freezing in cold temperatures, preventing small particles from breaking off inside the engine and wearing the water pump’s parts. You should refer to the manufacture’s manual on tips on repair and maintenance of your water pump.


If you have a car service, car repair or local car mechanic then they will be able to advise you when your water pump needs replacing. If not, then you can carry out an online search for car repair and maintenance or book an online car repair service. This should give you a list of certified car workshops in the UK that have trained technicians who can carry out a full diagnostic and health check and determine the water pumps lifespan.

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