Genuine OEM Audi Rear Right Fender Liner, part number 4G8810172B. This component is designed to protect the wheel well and surrounding underbody areas from road debris, water, and other contaminants. It is positioned in the rear right wheel arch, forming a protective barrier. Constructed from durable plastic with a felt-like sound-dampening backing, it weighs approximately 0.84 kg. Choosing a genuine OEM fender liner ensures exact contours for proper sealing and attachment, preventing gaps that could allow debris ingress and maintaining factory noise insulation.