How to Maintain Car Radiator Components

The function of the car radiator is as a cooling system in the vehicle engine. With the radiator, excess heat in the vehicle engine can be suppressed. Or in other words, the radiator functions to maintain the stability of the car’s engine temperature.

Not only cars, two-wheeled vehicles also use a radiator as a cooling system. Then, what is the working system of the radiator like?

Before moving on to how it works on a car, you must first understand the meaning of a radiator.


What is a car radiator?

The radiator is the main component in the cooling system of a vehicle. When described further, the radiator is a tool that absorbs heat energy in the vehicle engine to stabilize it.

The car radiator itself consists of several components that have their respective functions. If one of these components is damaged, the radiator cannot function optimally.

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What is the function of a car radiator?

When you start the engine and then run the car, all the car components work, such as the air conditioner, head unit or vehicle steering system.

This is where the function of the radiator begins to play a role. With the occurrence of this motion activity, the engine experiences friction which in turn creates heat.

The radiator also transfers heat from the engine to the air, by flowing radiator water or coolant into the channels attached to the vehicle’s engine.

The process by which the coolant flows, here the heat is absorbed and brings it back to the radiator which will then cool it down again. This is how the radiator works to maintain a stable car engine temperature.

Components supporting the work of a car radiator

The radiator works with the help of several supporting components so that it can work optimally. That is, without just one of these components, the work produced by the radiator is not optimal.

The following components support the work of a car radiator:


Inside the radiator itself there are several small interrelated components, namely the radiator core, upper and lower tanks, as well as radiator fins.

The upper tank is a tank that holds hot water or coolant from the engine.

The lower tank is a tank that holds coolant that has been cooled and is ready to be sent back to the engine.

The radiator core is a flat channel that connects the upper and lower tanks.

The radiator fins function as heat receivers from the radiator core while releasing heat to the air that passes through them.

The radiator starts working by maximizing the air flow through the fins. Coolant carrying high temperature flows to the radiator core to transfer heat.

The heat is then channeled to the radiator fins, because of their nature as conductors. Then, the heat in this conductor is channeled into the air through the radiator fins.

Close the radiators

Even though it looks trivial, the presence of a radiator cap functions to maintain air pressure in the cooling system. This component works when the pressure in the radiator increases, so the valve opens and releases air so that the pressure becomes stable.

Car Radiator Functions: Components, How They Work and Maintain

Radiator hose

The function of the radiator hose is to supply coolant from the engine to the radiator and vice versa.

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More or less has the same function as the radiator valve earlier, which is to keep the engine temperature in the normal range, 80 degrees Celsius.

Water Jacket

The water jacket is another component of the engine radiator which functions to circulate coolant and absorb heat thoroughly and evenly.

Reservoir tanks

The main task of the reservoir tank is to store cooling water. When the engine is running and at high temperatures, the coolant that evaporates causes the air pressure to rise.

This overflowing coolant is then channeled into the reservoir tank to be converted into liquid, so that the pressure is stable again.

Cooling Fan

Serves to reduce the temperature of the radiator by flowing air from outside through the fins. Currently there are two types of cooling fans, namely conventional and electric types.

Water pump

Served to drain the coolant into the cooling channel. The pump will circulate radiator water to the water jacket so that the engine heat drops or reaches a stable temperature.


Like the function of a thermometer in general, so does its job in a car engine as a coolant temperature gauge.