2.0L TFSI chain tensioner for camshafts. With a defective chain tensioner you can get an engine damage. When you change the tensioner you need to change the camshaft chain too. The advantages: -highest Quality -long life -Short delivery time Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com