Fiat 500 Abarth Owner's Manual page 315

3. Remove the two 5.5mm screws (1 and 2) that secure
the particulate air filter cover to the HVAC housing.
4. Remove the A/C air filter by pulling it straight out of the
housing. Take note of the air filter position indicators.
MAINTAINING YOUR VEHICLE 313
A/C Air Filter
5. Install the A/C air filter with the air filter position
indicators pointing in the same direction as removal.
7