1K0 121 101 T · Coolant hose Audi genuine (OEM) part number 1K0 121 101 T, Coolant hose. Fitted on (3)HOSE — pos 14 (KAT412.BIN)HOSE — pos 14 (KAT638.BIN)HOSE — pos 14 (KAT646.BIN) Open the interactive exploded diagram →