Genuine OEM Audi Roof Rail Cover Cap, part number 2K5898402AUL4. This cap provides a decorative and protective covering for the vehicle's roof rail mounting points. It is designed to sit flush on the roof, concealing the attachment hardware for the roof rails. The cap features a High Gloss Black (UL4) finish. Choosing a genuine OEM cap ensures an exact fit, matching factory aesthetics, and durable protection against the elements.