420 121 052 A · Coolant hose Audi genuine (OEM) part number 420 121 052 A, Coolant hose. Fitted on (3)HOSE — pos 29 (KAT618.BIN)HOSE — pos 29 (KAT752.BIN)HOSE — pos 1 (KAT752.BIN) Open the interactive exploded diagram →