2003-2005 E85 E86 BMW Z4 2.5i Differential Assembly / 3.64 / AutomaticDonor Car:2003 E85 BMW Z4 2.5i Roadster – 132KFunctionality:In good working condition, fully tested prior to removal from the vehicle. Differential spins smoothly with no odd noises or whining. Fluids has been drained with no abnormalities. Will ship drained of all fluids.Physical Condition:In good physical condition with no damage or cracks in the housing. Free of any major surface rusting or corrosion. Includes everything as shown in the photos. You will need to reuse some of your existing hardware for installation.Fits:2003, 2004, 2005 E85 E86 BMW Z4 2.5i (w/ automatic transmission)Fitment Notes:The differential gear ratio will only fit automatic transmission equipped models.Ratio : 3.64