4N0 121 056 AJ · Coolant hose Audi genuine (OEM) part number 4N0 121 056 AJ, Coolant hose. Fitted on (3)HOSE — pos 23 (KAT429.BIN)HOSE — pos 22 (KAT838.BIN)HOSE — pos 23 (KAT859.BIN) Open the interactive exploded diagram →