The Genuine BMW Back Glass Seal Lower - 51318119281 is a replacement seal for the lower portion of the back glass on BMW vehicles. This seal is made from high-quality materials and is designed to fit perfectly into the back glass, providing a tight and secure seal. It helps to prevent water, dust, and other debris from entering the vehicle through the back glass, keeping the interior clean and dry. This seal is an authentic BMW product and is specifically designed for use with BMW vehicles. It is an essential component for maintaining the integrity of the back glass and ensuring a safe and comfortable driving experience.