The Genuine BMW Bulb Holder Rear Light In Trunk Lid Left - 63217390233 is a component used in the rear light system of BMW vehicles. It is specifically designed for the left side of the trunk lid and is used to hold the bulb securely in place. This bulb holder is an authentic BMW product and is made from high-quality materials to ensure durability and reliability. It is an essential part of the rear light system, allowing for proper illumination and visibility while driving. This product is compatible with various BMW models and is an ideal replacement for damaged or worn-out bulb holders.