4K8 810 073 B · b-pillar Audi genuine (OEM) part number 4K8 810 073 B, b-pillar. Fitted on (2)PILLAR B — pos (9) · PR:5C1,5C2, (KAT435.BIN)PILLAR B — pos 9 (KAT435.BIN) Open the interactive exploded diagram →