ANSWERS: 1
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A differential located in the gearbox or transfer case of constant AWD or 4WD cars. The centre differential is connected to the front and rear propellor shafts and splits the power from the gearbox to the front/rear axles. Some constant AWD/4WD vehicles have advanced versions of the centre differential which can vary power split from front to back, and prevent loss of traction from both wheels at one end having no grip. In off-road constant 4WDs, the centre differential can usually be locked.
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