Expansion Tank 17138689765 For BMW 7 Series G11 G12 X5 G05 X6 G06 X7 G07 Engine N63

Possess the world's first technology for expansion tank with built-in chemicals in China.

Because when the engine start to work the temperature in the combustion is very high, the heat will be absorbed andtaken awary by the coolant in the engine chamber, and the coolant's capacity will be expanded, the exapansion tank give the extra space for the overflow coolant  from the radiator.

We control the quality in every process from the sample producing to the expansion tank shipping out strictly, we use high-end testing instruments to inspect every tank

This products have passed the IS09001  international quality system certification.