The Genuine Mercedes Windshield Washer Fluid Reservoir Plug is a small, plastic component designed to seal the opening of the windshield washer fluid reservoir in Mercedes vehicles. It is manufactured by Mercedes and is designed specifically for their vehicles. This plug helps to prevent any leaks or spills from the reservoir, ensuring that the windshield washer fluid stays contained and ready for use. It is a genuine OEM part and is made with high-quality materials to ensure durability and a proper fit. This plug is compatible with various Mercedes models and is an essential component for maintaining the functionality of the windshield washer system.