Universal: Our car tank covers are universal in size: 9*9*3.5cm, suitable for most vehicles with standard car tanks. Suitable for a wide range of vehicle models, part number 3B0121321 and 95810644700. In addition to cars, these tank covers can also be used for trucks, off-road vehicles and motorhomes. Simple Installation: Installation is a breeze. Simply screw the car tank cap onto the tank, without any additional tools, and it is ready to use as soon as it is screwed on. If you add water, simply unscrew the tank cap by hand. It is easy to install and remove, saving time and effort. Novelty and Fashion: Our premium blue car fuel tank caps are perfect for adding personality to your vehicle. They are not only cool decorations to add value to your car, but also durable and waterproof to protect your water from leakage, dust and sand. Practical: The car fuel tank cover provides better sealing to prevent water leakage and prevent dust, dirt and road debris from entering the vehicle. With a rotating threaded structure inside, it prevents water leakage and ensures stability and safety during driving. It is the best replacement for your lost water tank cap, you no longer have to worry about water leaking out of the tank.