Features: Enhances your nighttime driving safety with the Adaptive Headlight Control Unit, designed to automatically adjust the headlight beam direction based on steering angles for E81, E82, E84, E87, and E88 models. Featuring high quality electronic components, this module ensures stable performances and longevity in various environments, offering reliable adaptive lighting functionality. Ideal for owners looking to improve driving safety and experience, as well as automotive enthusiasts seeking high performances parts for vehicle customization. Perfect for city night driving, rural or mountainous roads, and adverse weather conditions, providing enhances visibility and safety during long highway journeys. With easy installation and built in fault diagnosis, this headlight control unit offers a seamless upgrades to your vehicle's lighting system, ensuring energy efficiency and extended headlight service life. Specifications: Material: Plastic Voltage: 12V Size: About. 63x55mm/2.48x2.17in Part Number: 63117180829 7171789 7180829 Applicable Model: for E81 E82 E84 E87 E88 116i 118i 120i 130i Package Includes: 1pc Drive Control Xenon Module note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.