Despite various regulation measures to simplify the aerodynamics of current Formula One cars, teams are exploring all possible areas where some gains can be made. In this early stage of the season, the area under the nose and ahead of the sidepods looks to be interesting for car development, mostly because it's not that strictly regulated.
While some teams have designed more complex splitters, Ferrari have chosen to continue using barge boards, albeit smaller ones than before. The unpainted - hence black because of the carbon fibre - panels are just within the maximum with of the car in this area. Rather than being an air for cooling, the new barge boards aim to guide air nicely around the sidepod. Compared to letting the airflow just hit the front of the sidepods, this will come with a reduction of drag.