Specific cable kit for retrofitting the Audi original silencer with integrated KUFATEC sound booster for the active audio system for Audi A6, A7 4G the cable kit is not available separately from Audi spare parts service existing connections for control unit, rear silencer left / right, power supply, CAN bus Scope of delivery: specific cable kit Note: for the retrofit you need further items (both silencers, control unit, Sound Booster) suitable sound booster, item number: 40180