The main components of a vehicle's cooling system include:
- Radiator: The radiator is a device that is used to dissipate heat from the engine coolant. It is typically made of aluminum and consists of a series of tubes and fins that are cooled by air flowing through them. The coolant flows through the radiator and absorbs heat from the engine, and the cooled coolant is then circulated back to the engine.
- Water pump: The water pump is a mechanical device that is used to circulate the coolant throughout the cooling system. It is driven by the engine and pumps the coolant through the radiator, engine, and other parts of the cooling system.
- Thermostat: The thermostat is a valve that is used to regulate the flow of coolant through the radiator. It is located between the engine and the radiator and helps to ensure that the engine is operating at the optimal temperature by allowing coolant to flow through the radiator when needed and restricting the flow when the engine is already at the desired temperature.
- Fan: The fan is used to help cool the radiator by drawing air through it. It is typically driven by an electric motor and can be controlled by the thermostat or the engine control unit (ECU).


