Part number: MER-2215003403 is a new, unused Genuine Mercedes radiator. The purpose of a radiator is to assist in keeping the engine operating at its optimum temperature by helping remove heat from a running engine. If your radiator is leaking or has blockages such that coolant cannot flow, then its time for a new radiator. Due to options like Air Conditioning and Tow Packages, radiators can vary within a model year, so if you are not sure which one you need, give us a call with your VIN number. We are happy to help.Mercedes understands the importance of offering the best Genuine Mercedes parts for its uncompromising customers. Mercedes knows you expect the absolute best quality parts for your vehicle and Mercedes is uncompromising on quality just like the customers that purchase their vehicles. FCP Euro carries a wide range of precision-manufactured OEM (original equipment manufacturer) and aftermarket replacement parts for your vehicle. It's almost certain we will be able to satisfy your auto parts needs, no matter how complicated. If you need an uncommon part that isn't currently in stock, we will try to find it for you.