04E 121 178 · Coolant hose Audi genuine (OEM) part number 04E 121 178, Coolant hose. Fitted on (3)HOSE — pos 15 (KAT216.BIN)HOSE — pos 15 (KAT849.BIN)HOSE — pos 15 (KAT897.BIN) Open the interactive exploded diagram →