2012 BMW BMW Z4 - Transmission, Transaxle Automatic Transmission, Rdstr, SDrive35is 7 Spd, 60 Months Warranty. Free Shipping, 1 Month Return Policy. Used (Original Equipment Manufacturer). Transmission Tested and Run, covered by warranty. All Transmissions are Shipped as Complete Assemblies including: Transmission; Torque Converter (Automatic Transmissions Only); Oil Pan.