4K0 121 447 AE · Coolant hose Audi genuine (OEM) part number 4K0 121 447 AE, Coolant hose. Fitted on (3)HOSE — pos 38 (KAT1123.BIN)HOSE — pos 38 (KAT430.BIN)HOSE — pos 38 (KAT435.BIN) Open the interactive exploded diagram →