1、OE Number: The referencing OE number of this radiator coolant overflow tank are 2465000049, 671‑50577, 24650ss00049, which is molded depend on the original data. 2、Fitment: The engine coolant recovery tank is a replacement for Mercedes‑Benz CLA250 2014‑2018, for CLA45 AMG 2014‑2018, for GLA 250 2015‑2017, for GLA 45 AMG 2015‑2017. 3、Durable Construction: Made of ABS plastic, good sealing, effective prevent leakage, high temperature resistance, low temperature proof, not easy to break. 4、Function: Play an important role in balancing the pressure of the water tank, and can intuitively know whether the current water volume of the water tank is sufficient. 5、Easy Installation: Easy to install, no modification, cutting, or drilling required. It adopts original standard, which is a perfect replacement and can perfectly match to your car.