2105010615 Radiator Coolant Reservoir Expansion Tank Cap for Mercedes-Benz C300 E400 GLA250 CLA250 S550 SL550 E400 E550 2105010615

OE Number: 2105010615,2105010715,0005018215,2105010515,2105010315
Remove the old reservoir cap, then install the new cap on the reservoir. Make sure that it will be fitted and sealed on the expansion tank, it is easy to install
When the engine temperature is high, the coolant will expand due to the high temperature. Some of the coolant can flow into the auxiliary water tank through the design principle of the water tank cover, thereby reducing the pressure on the main water tank and also helping to improve the heat dissipation effect of the radiator
The expansion tank cover is designed to be sealed, which can prevent coolant overflow or leakage, thereby maintaining pressure balance within the system
The design of the expansion tank cover helps to improve the boiling point and performance of the coolant, ensuring that the engine operates at suitable operating temperatures

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