This product is a genuine BMW bi-xenon headlight assembly designed for use on the E60 and E61 models. It is the left side assembly and has a part number of 63127166117. The headlight is equipped with bi-xenon technology, which provides brighter and more efficient lighting compared to traditional halogen headlights. It also features a sleek and modern design, adding to the overall aesthetic of the vehicle. This headlight assembly is a direct replacement for the original part and is made with high-quality materials to ensure durability and long-lasting performance.