How a Car Radiator Keeps Your Car Engine Cool


If you want to go for a long drive with friends or family in your car, ensure the car radiator is working smoothly. It will help you in the uninterrupted stress-bursting journey by keeping your car engine cool and protecting it from blowing off.

When your car engine works continuously, it generates immense heat. It is very important to control the heat generated heat while operating. Otherwise, it can damage the other parts of the engine. A cooling system is installed in the car to address the overheating issue,

Let’s try to understand radiators’ basic attributes and functions.

What is a car radiator?

A radiator in the car is the mechanical part to control the heat produced in the engine. It is one of the parts of the cooling system, such as a liquid coolant, hoses to circulate the coolant, a fan, and a thermostat.

Usually, you can find radiators in front of the engine and under the hood. Car radiators are fabricated from metal-like aluminium fins, flattened aluminium tubes, and plastic header tanks.

Components of Radiator

According to the prominent car radiator manufacturer in India, FTH, five different components are used in the fabrication of radiators.

  1. Core

This is a very crucial part of the entire cooling system, which is in the form of thin aluminium fins with multiple blocks. You can find this part at the front part of the engine body.

After the heat transfer, hot coolant reaches out to these aluminium fins, releasing heat into the air. Once this coolant temperature drops to normal, it returns to function to absorb heat.

  1. Pressure Cap

The pressure cap locks the radiator to make it airtight. It helps the radiator maintain pressure in the chamber for flowing coolant and liquid as it ensures safe operation during heated coolant.

  1. Tanks

Inlet-outlet tanks are short of the transmission line between your engine and radiators. It transfers boiling coolant from the engine to the radiators to cool down.

  1. Coolant

Indeed, coolants are liquid mixtures of antifreeze and water. Mainly this coolant contains ethylene glycol. It also protects water from freezing by declining its freezing point, which helps it stay liquid in extreme winter conditions.

  1. Radiator Hoses and Transmission Cooler

Radiator hoses are long rubber-encapsulated tubes that transfer engine coolant between the engine and radiator. At the same time, transmission coolers are coolants similar to engine transmission.

Check Also: Ways to Fix a Leaking Car Radiator

How Does a Car Radiator Work?

When a vehicle burns fuels, it releases heat into the engine body. The thermostat is the first component of the cooling system that detects the heat generated in the engine. After the heat detection, the radiator releases the water and coolant toward the engine. This coolant absorbs heat within its threshold limit. After the peak point, it returns to the radiator, where it exchanges heat with atmospheric air.

However, there are many cases where incidents of radiator failure came to light. Sudden radiator failure can cause your car damage. The reason behind radiator failure could be the low level of coolant, hose leakage, or a malfunctioning thermostat. To prevent radiator failure, you can follow these tips.

  • Send your car for regular maintenance and change radiators at every 3–4-year intervals. You should contact a popular and reliable radiator exporter for the same.
  • Check the hose pipe before driving, as its rubber layer decay over time.
  • If you notice a sudden drop of coolant in the radiant, there is a high chance of leakage in the hose pipe.
  • Wash radiators and change coolants after a few years. Coolants present in the car radiator get contaminated after a few years.

In case your radiator is damaged or fails, here are the signs you can notice.

  • Feels or smells something burning under the hood of your car
  • Abnormal fluctuations in the instrument cluster temperature gauge
  • Presence of green chemicals or anti-freezing chemicals under the vehicle
  • Engine overheating


Car radiators play a pivotal role in keeping your car engine cool and reducing maintenance. Coolant and water’s heat-transferring property save your car engine from overheating. However, it is advisable to fit efficient radiators from a reputed car radiator supplier, like FTH. Quality car radiators with coolant keep your car driving smooth and hassle-free.

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