8P4 860 021 K · roof rail Audi genuine (OEM) part number 8P4 860 021 K, roof rail. Fitted on (2)ROOF RAIL — pos (1) · PR:3S2 (KAT412.BIN)ROOF RAIL — pos 1 · PR:3S2 (KAT638.BIN) Open the interactive exploded diagram →