Specific antenna system for Audi A3 8P The system is required to achieve perfect radio reception when upgrading to the following head units: Article 35643-2 is required when upgrading: Radio Concert 2, Symphony 2 >>> to >>> Radio Concert 3, Symphony 3 Article 35643-3 is required when upgrading: Radio Concert 3, Symphony 3 >>> to >>> Navigation RNS-E, BNS 5.0 Selectable options: Radio Concert3, Symphony3 to RNS-E, BNS 5.0 Radio Concert2, Symphony2 to Concert3, Symphony3 Scope of delivery: 2 antenna modules Fakra cable Note: Only suitable for vehicles up to model year 2009 Only suitable for vehicles from model year 2005 The material supplied comes from test vehicles. The components have passed several functional tests. You receive a 24-month warranty on the items.