The Genuine BMW Side Window is a high-quality replacement part for the left rear door of BMW vehicles. It features a green tinted glass that helps to reduce glare and protect against harmful UV rays. This fixed window is designed to fit seamlessly into the door frame and provide a secure seal to keep out wind and rain. It is made from durable materials to ensure long-lasting performance and is an authentic BMW product, ensuring the perfect fit and function for your vehicle. This specific part number is 51357033643.