4KL 820 237 A · Air pipe Audi genuine (OEM) part number 4KL 820 237 A, Air pipe. Fitted on (2)AIR PIPE — pos 9 · PR:2V3 (KAT1113.BIN)AIR PIPE — pos 9 · PR:2V3,2V9 (KAT586.BIN) Open the interactive exploded diagram →