VW T-Roc 2017-2021 Radiator Coolant Expansion Header Tank With Sensor Vehicle Model_Justy are an important safety and

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VW T-Roc 2017-2021 Radiator Coolant Expansion Header Tank With Sensor Vehicle Model_Justy are an important safety andOne of the lesser known parts on your VW T Roc is the coolant expansion tank. This component is responsible for catching and storing coolant overspill from the vehicle's radiator. The coolant in your vehicle is designed to prevent the engine from overheating. As it reaches its optimal operating temperature, it expands and can overflow. The expansion reservoir collects this excess fluid and stores it safely instead of letting it spill onto the road.