This product is a genuine Porsche A/C Line O-Ring with the part number 95557374904. It is designed for use in air conditioning systems and is used to create a tight seal between the A/C line and other components. This O-Ring is specifically designed for Porsche vehicles and is made with high-quality materials to ensure durability and proper functioning. It is an essential component for maintaining the efficiency and performance of the A/C system in a Porsche vehicle.