04E 903 021 NX · Alternator Audi genuine (OEM) part number 04E 903 021 NX, Alternator. Fitted on (2)ALTERNATOR — pos (2) · CZ (KAT792.BIN)ALTERNATOR — pos (2) · PR:TJ4,TK8 (KAT803.BIN) Open the interactive exploded diagram →