coolant overflow tank

Coolant can be found in the engine, the water pump at the front of the engine, the radiator, the radiator overflow tank, and the heater core behind the dashboard, along with the valves and hoses that connect them.

The Coolant Overflow Tank stores the coolant that expands due to temperature rise. It is also convenient for the driver to visually observe whether there is a lack of coolant inside and replenish it in time.