The A2479004104 Mercedes A-CLASS W177 B-CLASS W24 7 LED Headlight Ballast Control is a direct replacement headlight ballast designed specifically for Mercedes vehicles. It is a factory-style LED headlight ballast with a wattage of 24W, ensuring optimal performance and reliability. This product comes with no warranty but is guaranteed to fit and function effectively, providing a quality lighting solution for your vehicle. Perfect for those looking to replace their existing headlight ballast with a high-quality, compatible option.