Drive Axle Boots (CV Boots)

The Drive Axle Boot is a rubber cover that protects the drive axle jOint. It’s also known as the CV (constant velocity) boot, because the drive axle joint it covers is more commonly called the CV joint. Cracks or tears in the rubber can cause leaks and expose the CV joint to the elements.
Most of modem vehicles are Front-wheel-Drive, and they all have CV-joints. The CV-joint is greased inside and sealed by a rubber boot that unfortunately tend to break sometimes. If the CV -joint boot breaks, the grease comes out, the dirt and water comes in and the whole axle unit may become inoperative in a short period of time.
If the boot is broken, it needs to be replaced. If not replaced in time, whole axle shaft will need to be replaced which will cost you much more than just replacing the boot.