The 2.0L TFSi petrol engine from found across the Volkswagen Audi group ranges of vehicles from 2003 to about 2010 uses a camshaft drive belt to drive one camshaft and a camshaft transfer chain in the head to drive the second camshaft. The Laser 4421 provides the timing tools required to replace the cambelt and the remove the transfer chain. For Audi A3, A4, A6, S3, TT 2.0 (2003-2010).Includes camshaft alignment tool, tensioner wrench and pin. Sold in foam tray with modular packaging. Available also in metal storage case (Part No 4536).