5Q0 121 447 P · Vent hose Audi genuine (OEM) part number 5Q0 121 447 P, Vent hose. Fitted on (3)HOSE — pos 21 (KAT745.BIN)HOSE — pos 4 (KAT745.BIN)HOSE — pos 4 (KAT745.BIN) Open the interactive exploded diagram →