The Genuine BMW Alternator Bracket Gasket (part number 12317507807) is a high-quality gasket designed specifically for BMW vehicles. It is used to seal the alternator bracket to the engine block, ensuring a tight and secure fit. This gasket is made from durable materials and is built to withstand the high temperatures and pressures of the engine. It is an essential component for maintaining the proper functioning of the alternator and ensuring the overall performance of the vehicle. This gasket is an authentic BMW product and is recommended for use in all BMW models.