Hydro tappet for the TSI EA888 Gen.1, Gen.2 and Gen.2 chain engine. Hydraulic tappets should be replaced when installing a sport camshaft or when replacing the original camshafts to prevent engine damage and allow the engine to rev faster. Prize for one Single Hydro tappet. When using Schrick sport camshafts, new hydro tappets must be installed, otherwise the warranty will be void! Samlpe Picture! Manufacturer Information about the manufacturer BAR-TEK BAR-TEK Motorsport GmbH Im Rauschen Auel 3, 51491 Overath-Brombach, Germany info@bar-tek.com