1K0 121 073 BB · Coolant hose Audi genuine (OEM) part number 1K0 121 073 BB, Coolant hose. Fitted on (2)HOSE — pos 10 · PR:G0L (KAT412.BIN)HOSE — pos 10 · PR:G0L (KAT638.BIN) Open the interactive exploded diagram →