Transmission System Description and Operation: Differential
WARNING: This page is about a different car, the 2008 Pontiac Wave. However, it is still accessible from the selected car via links, so may be relevant.
Differential is integrated with transmission case and installed on chassis together with engine. It changes the direction of power and increase torque by reducing speed.
Reduction gear is installed parallel to counter shaft and is helical gear type. Differential gear is bevel gear type and is integrated with reduction gear.