2009-2016 BMW E89 Z4 Convertible Top Hydraulic Main Pillar Cylinders. Includes the passenger and driver side liftcylinders asshown. Removed from a 2011 BMW E89 Z4 sDrive30i with a fully functioning convertible top assembly. Fully tested prior to removal from thevehicle with no leaks ormalfunctions. In good physical condition with no damage to the piston or seals. Housing has no major corrosion or wear as well. Includesonly thecylindersas shown, you will need to reuse your existing linesand hardware forinstallation. We suggest having these installed by a professional to ensure the system is properly bled and sealed to prevent any future leaks during operation.Part # 54377223335 (driver)Part # 54377223336 (passenger)Fits:2009, 2010, 2011 BMW E89 Z4 sDrive30i2011, 2012, 2013, 2014, 2015, 2016 BMW E89 Z4 sDrive28i2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 BMW E89 Z4 sDrive35i2011, 2012, 2013, 2014, 2015, 2016 BMW E89 Z4 sDrive35isZ4901mm