The Genuine BMW Upper Headlight Gasket Left (E39) - 63128387513 is a high-quality replacement gasket designed specifically for BMW E39 models. It is used to seal the upper portion of the headlight, providing a tight and secure fit to prevent any moisture or debris from entering the headlight housing. This gasket is made from durable materials to ensure long-lasting performance and is an authentic BMW part, ensuring a perfect fit and compatibility with your vehicle. It is an essential component for maintaining the integrity and functionality of your headlights, ensuring optimal visibility and safety while driving.