N90 863 501 · hex. nut Audi genuine (OEM) part number N90 863 501, hex. nut. Fitted on (3)hex. nut — pos 17 · MK.60 (KAT209.BIN)hex. nut — pos 17 (KAT229.BIN)hex. nut — pos 17 (KAT341.BIN) Open the interactive exploded diagram →