Specific antenna system for Audi A3 8PA Sportback The system is required to achieve perfect radio reception when upgrading to the following head units: Item number 35643 is required when upgrading: Radio Concert 2, Symphony 2 >>> to >>> Radio Concert 3, Symphony 3 Item number 35643-1 is required when upgrading: Radio Concert 3, Symphony 3 >>> to >>> Navigation RNS-E, BNS 5.0 Selectable options (upgrade ) : Radio Concert 3, Symphony 3 to RNS-E, BNS 5.0 Radio Concert 2, Symphony 2 to Concert 3, Symphony 3 Scope of delivery: 2 x antenna modules Fakra cable Note: Only suitable for vehicles up to 'model year 2009 The delivered material comes from test vehicles. The components have passed several functional checks You benefit from a 24-month warranty on the items