This is a brand new window regulator for a BMW 528i, designed for the left rear position and featuring an electric motor. The regulator is made from high-quality plastic and galvanized steel, ensuring durability and longevity. It is compatible with the BMW OE/OEM part number 51358159835 and the interchange part number 740-416 or 740416. The regulator is manufactured in China and is not considered a vintage or performance part. It is designed specifically for BMW vehicles and will fit in the rear left position. Despite being a universal fitment, it is important to ensure that it is the correct part for the vehicle before making the purchase.