Fiat 2013 500 ABARTH Owner's Manual page 319

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 317
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