8AN Male Fuel Cell Tank Vent Valve Prevent Fuel Leakage Material: Aluminum+Plastic+Stainless Steel AN8 male flare tip over / roll over vent valve This rollover valve is designed to prevent fuel leakage and a possible fire when your vehicle has been unexpectedly flipped on its side or upside down It also allows the tank to breathe and not build up pressure or vacuum during normal operation Package included:1 x 8AN Male Vent Valve