The Genuine BMW Brake Rotor Dust Shield - 34216857981 is a protective component that is designed to prevent dust and debris from entering the brake rotor area. It is specifically designed for use in BMW vehicles and is made from high-quality materials to ensure durability and reliability. This dust shield helps to keep the brake rotors clean and functioning properly, which can improve overall braking performance and prolong the life of the brake system. It is an essential part of the braking system and is recommended for replacement if damaged or worn out. The part number for this product is 34216857981.