Adjustable cam gear for all 1.8T engines with engine code AEB as built in the Audi A4 B5 & VW Passat 3b. Putting a Tuning Cam in your engine you should use also this adjustabla cam gear for exact adjustment and best performance of your engine! This adjustable cam gears are made from the highest quality aluminum. They are CNC machined to more exacting tolerances than original gears.The tooth edges are beveled to increase belt life. Polished version. Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com