WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing Engine Mount Bolts
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Top crankshaft bearing shells are graded at factory and identified on cylinder block as shown in illustration.