8P4 860 021 M · roof rail Audi genuine (OEM) part number 8P4 860 021 M, roof rail. Fitted on (2)ROOF RAIL — pos 1 · PR:3S2 (KAT646.BIN)ROOF RAIL — pos 1 · PR:3S2 (KAT720.BIN) Open the interactive exploded diagram →