Fuel Cell Rollover Vent Valve-10 AN Male to -10 AN FemaleExternal MountedSold Individually JEGS 15379 Fuel Cell Rollover Vent Valve for a -10 AN connection will help prevent fuel spillover during a rollover. This external valve mounts directly to a -10 AN vent connection on a fuel cell. Rollover valves are recommended for driver safety and are required in all sanctioned racing events.Fuel Cell Rollover Valve Dimensions Click Here