【Precautions】Please confirm compatibility based on your vehicle's year, brand, model, and the OE number of the replacement parts. Compatible with:2017-2019 Mercedes-Benz C43 C450 AMG SLC180,2012-2018 Mercedes-Benz CLS350 CLS400 CLS500 CLS550,2015-2016 Mercedes-Benz E200 E250 E300 E350 E400 E550 l4 2.0L,2013-2015 Mercedes-Benz C180 C200 C230 C250 C280 C300 C350 C400 l4 1.6L,2013-2015 Mercedes-Benz GLK250 GLK350 l4 2.1L.etc. More information can be found in the pictures or on the details page. 【OE Standard Performance】100% brand new and high quality auto parts with OE grade durability for the ultimate comfortable driving experience. Coolant expansion reservoir OE No., , , 603-257. 【Coolant Reservoir Features】This coolant overflow tank is made of high quality PP-GF10 material, which helps to reduce oil dilution, fuel consumption, prevent oil leakage and reduce the pressure of car cooling system. You can directly see the internal antifreeze level without opening the radiator cap to avoid damaging parts. 【Buy with Confidence】As an automotive enthusiast and performance lover, our engine coolant reservoir is the perfect choice for you. This is a component for which we provide detailed instructions in the package to help you install it easily, but you must keep in mind that professional installation is essential. Don't hesitate to add it to your cart now! 【About 】We are a professional automotive component manufacturer with a mature industrial production line. If you encounter any issues with our products, please contact us immediately, and we will respond to you within 48 hours. We are committed to providing 30-day money back and 12-month quality warranty service. Choose , choose high-quality products.