The Genuine BMW Cover Window Frame Left (Harman Kardon) - 51338234629 is a replacement cover for the left side window frame of a BMW vehicle that is equipped with a Harman Kardon sound system. It is made by BMW and is an authentic, high-quality part designed specifically for BMW vehicles. This cover is used to protect the window frame and provide a clean, finished look. It is compatible with various BMW models and is an essential component for maintaining the appearance and functionality of the vehicle.