Three wheeler differential assembly parts, covering the differential case, crown gears and pinions for the rear axle drive of a three wheeler. The set shows a machined differential housing with side windows, large ring gears with straight-cut teeth, a bevel gear, small star-shaped spider gears, stepped spur gears and a plain cross pin. The parts are bare machined steel with a grey finish. A differential lets the two rear wheels turn at different speeds through a corner while both stay driven.