4M0 121 052 C · Coolant hose Audi genuine (OEM) part number 4M0 121 052 C, Coolant hose. Fitted on (3)HOSE — pos 16 (KAT429.BIN)HOSE — pos 16 (KAT859.BIN)HOSE — pos 17 (KAT859.BIN) Open the interactive exploded diagram →