The ZF S6-37 is a 6-speed manual transmission manufactured by ZF Friedrichshafen AG. It is designed for longitudinal engine applications, and is rated to handle up to 370 newton metres (273 lbf·ft) of torque.
Gear ratios:
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http://www.zf.com/corporate/en/products/product_range/cars/cars_manual_6_speed_transmission.shtml http://www.bmwclub.lv/files/05_E85_Driveline.pdf