The transfer case is a component of the transmission system of a four-wheel drive vehicle (4x4) that distributes engine torque to the front and rear wheels. It is located between the engine and the gearbox, and it is generally driven by a transmission shaft. The transfer case generally has two positions: 2-wheel drive (2WD) and 4-wheel drive (4WD). In 2WD position, engine torque is only transmitted to the front wheels. In 4WD position, engine torque is transmitted to the front and rear wheels. BMW: 27107505377, 27107619645, 27107619646, 27107629177, 27107629178, 27107629179, 27107636180, 27107636444, 27107636445, 27107636487, 27107636488, 27107636489, 27107639265, 27107639273, 27107639274, 27107643758, 27107643759, 27107643760, 27107649784, 27107852166, 27107854164, 27108604770, 271086047.
