4B0 203 513 A · Coolant hose Audi genuine (OEM) part number 4B0 203 513 A, Coolant hose. Fitted on (3)HOSE — pos 20 (KAT261.BIN)HOSE — pos 20 (KAT262.BIN)HOSE — pos 20 (KAT264.BIN) Open the interactive exploded diagram →