1K0 121 157 DF · Coolant hose Audi genuine (OEM) part number 1K0 121 157 DF, Coolant hose. Fitted on (3)HOSE — pos 16 (KAT412.BIN)HOSE — pos 16 (KAT638.BIN)HOSE — pos 16 (KAT646.BIN) Open the interactive exploded diagram →