Specific complete kit for upgrading the active audio system of the Audi A4 8W This cable set connects the radio/navigation unit to the subwoofer, the centre speaker Extension of the existing speaker system (PR no.: 8RM) Better sound thanks to an additional subwoofer and a centre speaker Additional settings in the sound menu of the infotainment system Selectable option: All production dates, Saloon + PR no.: all PR numbers Production date: until 01.08.2016, Avant, PR no.: 0K0 Production date: until 09.01.2017, Avant, PR no.: 0K0 Production date: from 10.01.2017, Avant, PR no.: 0K0 + 0K4 in conjunction with VH0 All production dates, Avant, PR no.: 0K2 All production dates, Avant, PR-No.: 0K4 only in conjunction with VH2 Scope of delivery: Cable set 1 x subwoofer for spare wheel well 1 x centre speaker Screws Coding dongle Notes: Currently it is not possible to retrofit vehicles from model year 2024