This replacement headlight glass lens cover is designed to worn, damaged, or broken headlight lenses, restore optical clarity, and improve waterproofing. It is a direct OEMstyle replacement that matches factory specifications for BMW 5 Series models. Key features and benefits Compatibility: BMW 5 Series F10/F11/F18, including models 520d, 523li, 525li, 530li, with year range 2010, 2011, 2012, 2013, 2014. OEM part number 63177216886. Material and construction: Glass headlight lens cover, designed to match the original component for proper fit and appearance. Function: Replaces aging, yellowing, or cracked lampshade to restore headlight clarity and ensure a proper seal against moisture. Waterproofing and protection: Maintains a waterproof seal to protect the headlight internals from water, dirt, and debris. Performance: Helps maintain original light output and beam pattern by restoring a clear, unobstructed light path. Installation: Direct replacement for the original headlight lens cover; designed to fit without modification when used with the specified OEM part. Appearance: Restores a like appearance, contributing to the vehicle's exterior aesthetics. Typical use scenarios Scenario 1: A 2010–2014 BMW 5 Series owner discovers a cloudy, yellowed, or cracked headlight lens. with this glass lens cover to restore clarity and protection. Scenario 2: A or DIY enthusiast performing headlight maintenance on F10/F11/F18 vehicles can use this as an OEMstyle replacement to maintain factory fit and performance. Scenario 3: Vehicle showroom or fleet maintenance where restoring headlight appearance and reliability is part of routine upkeep, using OEMcompatible parts with part number 63177216886.