WARNING: This page is about a different car, the 2024 Audi A5 Quattro and 2023 Audi A5 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
Seal Installer - Flange Shaft:T40163
Fig 1: Identifying Thrust Piece T40163
Courtesy of AUDI OF AMERICA, LLC
Sealing Grease. Refer to the appropriate Electronic Parts Information.