The Genuine Porsche Fuel Level Sending Unit Lock Ring (part number 99720162300) is a locking ring used to secure the fuel level sending unit in place. This ring is specifically designed for Porsche vehicles and is made from high-quality materials to ensure durability and reliability. It is an essential component for maintaining accurate fuel level readings and preventing leaks in the fuel system. This product is an original Porsche part and is compatible with various Porsche models.