Hey guys.. i solved it.. it´s damper fuel assembly.. part number is 42086AJ090 and i could get one only at official subaru dealer.. it costs me arround 95€.. if it´s really rusted.. there are 2 10M nuts but really hard to unscrew.. so i just ripped this out, unscrew 8M screw on new one and just fitted the tamper in place.. hoses are strong enough to just hold it in place.. so next time you´ll change it.. it´s gonna be very easy :)