four-speed automatic transmission for front-wheel drive (ZF) Electronically controlled. The cut-away parts are: Torque converter with lockup clutch all hydraulic couplings planetary gear trains differential hydraulic control The transmission can easily be turned. description ordernumber 1222 see also: function model: transmission technology, 5-gear front transmission students assembly set, main shafts six-speed direct shift transmission (VW) adjustable differential