If you are planning to buy or install a new axle on your vehicle, there are a few things to keep in mind. The first is that the axle must be "recommended" by your vehicle manufacturer, so be sure to check this before purchasing. Additionally, make sure you have the right parts for the job - most manufacturers sell specific parts for their particular axles. Finally, always check with your car mechanic prior to installation to make sure everything is set up correctly and working as intended.