Re: Alfa 147 - pollen filter location
The left hand side L section, basically the side of the heater box is removed via 5 no. 5.5mm hex headed self tappers and the section hinges then pulls out. The filters pull out from right to left.
If its never been changed there will be one big filter in there, service replacement is 2 small filters (as a big one wont go back in!)
Best of luck! - Maybe someone will post a phot as its really not obvious.
You will need a 5.5mm socket and a short extension.