1. The 2003-2006 AUDI A4 Parts Catalogue Manual is a comprehensive guide that provides detailed information on all the parts and components of the AUDI A4 model from 2003 to 2006. This manual is essential for anyone looking to repair or maintain their AUDI A4, as it includes detailed diagrams, part numbers, and descriptions to help you easily identify and order the correct parts for your vehicle. Whether you are a car enthusiast or a professional mechanic, this parts catalogue manual is a valuable resource to have on hand.