The Genuine Mercedes Windshield Washer Check Valve is a small, but important component of a vehicle's windshield washer system. It is designed to regulate the flow of washer fluid from the reservoir to the windshield, ensuring that the correct amount of fluid is delivered for effective cleaning. This check valve is specifically designed for use in Mercedes vehicles and is made with high-quality materials to ensure durability and reliable performance. It is an essential part for maintaining a clear and clean windshield while driving.