057 121 052 B · Coolant hose Audi genuine (OEM) part number 057 121 052 B, Coolant hose. Fitted on (3)HOSE — pos 27 (KAT675.BIN)HOSE — pos 27 (KAT696.BIN)HOSE — pos 27 (KAT771.BIN) Open the interactive exploded diagram →