057 121 052 · Coolant hose Audi genuine (OEM) part number 057 121 052, Coolant hose. Fitted on (3)HOSE — pos 25 (KAT291.BIN)HOSE — pos 25 (KAT493.BIN)HOSE — pos 25 (KAT635.BIN) Open the interactive exploded diagram →