Diff Housing 091517121A

Image is an example only, BRAND MAY VARY

A differential housing is a car component that encloses the differential, which is a gearbox that enables the wheels to rotate at different speeds. The differential housing is typically made of cast iron or aluminum and is positioned in the car's axle. Its primary function is to protect the differential from external damage, including dirt, water, and debris, and prevent lubricant from escaping. Additionally, the differential housing helps to absorb and dissipate heat generated by the differential, which can be detrimental to the car's performance.

The differential inside the housing allows the wheels to rotate at different speeds, which is necessary when driving around corners or making turns. When a car turns, the inside wheel has less distance to travel than the outside wheel, creating a disparity in speed. The differential compensates for this by allowing the wheels to rotate independently, providing the necessary torque to each wheel. In rear-wheel-drive cars, the differential housing is typically located at the rear of the car, while in front-wheel-drive cars, the differential is often integrated with the transmission and located at the front of the car.