Compatible with: For A4 2009-2016, For A5 2010-2017, For allroad 2013-2016,For Q5 2011-2017. Function: The water tank is an important component of the water-cooled engine. As an important component of the water-cooled engine cooling circuit, it can absorb the heat of the cylinder and prevent the engine from overheating due to the large specific heat capacity of the water.. Benefit: Help to reduce oil dilution, cylinder bore wear, fuel consumption, and improve efficiency of the heating system.. Features: Engineered to stand up against the stresses of heat and vibration stopping cracks or leaks..
