Genuine OEM Mini Brake Vacuum Line, part number 11668509027. This hose is responsible for supplying vacuum pressure from the engine to the brake booster, which assists in applying the brakes. It is a critical component for the proper functioning of the braking system. The line is constructed from a flexible, durable material designed to withstand engine bay temperatures and vacuum pressures. Genuine OEM parts are essential for brake system integrity, ensuring correct vacuum flow and preventing leaks.