Differentials transmit power from the engine to the wheel speeds, a turning car would be much harder to control.
All-wheel drive cars have differentials between each set of wheels and well as one in the center, between the front and back wheels. Other vehicles do not have the center differential.
Differential Cover Brands
Differential covers can run anywhere from as cheap as $60 all the way up to almost $300. Pricing depends mostly on material. Here are a few brands that produce differential covers for various vehicles.
*cast iron for some serious durability.
* Mag Hytec: Mag Hytec creates heavy duty covers that increase cooling and add oil capacity.
*steel plate and come unpainted.
*stainless steel.
Other Brands include:
* Rancho
* Genuine Gear
* Spectre
* Mota Performance