The URO Parts Fuel Tank Breather Valve - 016919 is a component designed to regulate the air pressure inside a vehicle's fuel tank. It is responsible for allowing air to enter the tank when fuel is being used, and preventing air from escaping when the tank is full. This valve helps to maintain proper air pressure and prevent excess pressure buildup, which can lead to fuel leaks or other issues. The URO Parts Fuel Tank Breather Valve is a reliable and durable option for ensuring the safe and efficient operation of a vehicle's fuel system.