2009-2011 BMW E89 Z4 sDrive30i rear differential assembly. Removed from a 2011 BMW Z4 sDrive30i with 96k miles. This vehicle was equipped with the automatic transmission. Will NOT fit manual transmission equipped vehicles. The differential has a final drive ratio of 3.64. Fully tested prior to removal from the vehicle, and was in good working condition In good physical condition with no damage to the exterior housing or differential unit. We did note the driver side axle seal showed signs of leaking when in the vehicle, so this should be replaced prior to installation. You will need to reuse some of your existing hardware for installation.Fits:2009, 2010, 2011 BMW E89 Z4 sDrive30i (w/ automatic transmission)Z4906mm