Buy 2009 Audi A3 Door Seal (Front). Rear door. interior trim. Left, Weatherstrip - OEM Audi Part # 8P4867415A (8P4-867-415-A, 8P4867415)

W'strip.
Rubber seal around the door frame, aka Weatherstrip. Belt. Door Weatherstrip. Inner. On body. Protector. Seal. Surround.

Door Seal

Fits A3