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A differential is the mechanical device that divides the engine torque and allows each output to spin at a different speed. There are front-wheel-drive differentials, rear-wheel-drive differentials and all-wheel-drive differentials.

Because the wheels on a car sometimes spin at different speeds and move slightly different distances when turning, a device is needed to allow each to rotate at a different speed (hence the name “differential”). A differential also provides the final gear reduction that slows the rotational speed of the transmission before it reaches the wheels.

  • Fluid changes
  • Bearings – carrier & pinion
  • Pinion and axle seals
  • U-joints and axle shafts and drive shafts