The Genuine BMW Power Window Switch Finisher (part number 51417024647) is a component of the power window system in BMW vehicles. It is a small plastic cover that surrounds the power window switch, providing a clean and finished look to the interior of the car. This finisher is designed specifically for BMW models and is made from high-quality materials to ensure durability and a perfect fit. It is an essential part of the power window system, as it protects the switch and wiring from damage and also enhances the overall aesthetic of the vehicle's interior.