The Genuine Porsche Door Mirror Glass (part number 99773103514) is a replacement mirror glass for the side mirrors of a Porsche vehicle. It is an authentic and original product from the Porsche brand, designed specifically for use in their vehicles. This mirror glass is made of high-quality materials and has been tested to ensure it meets Porsche's standards for performance and durability. It is a direct fit for the original mirror glass and does not require any modifications for installation. This product is an essential component for maintaining the functionality and aesthetics of a Porsche vehicle's side mirrors.