4L0 035 223 J · Amplifiers Audi genuine (OEM) part number 4L0 035 223 J, Amplifiers. Fitted on (3)BOOSTER — pos (2) (KAT675.BIN)BOOSTER — pos (2) (KAT675.BIN)BOOSTER — pos (2) (KAT675.BIN) Open the interactive exploded diagram →