Genuine OEM Audi Lower Front Door Hinge Half, part number 9J1831407. This essential component enables the front door to pivot open and close reliably, maintaining correct door alignment and operation. It is installed on the lower left side of the front door assembly. Weighing approximately 0.26 kg, this hinge half is manufactured to precise factory standards. Opting for a genuine OEM hinge ensures exact fitment, robust construction, and consistent performance, preventing common issues like door sag or misalignment over time.