Using the wrong alternator can cause a number of problems, including:
* The alternator may not be able to provide enough power for the vehicle's electrical system, which can lead to problems with starting the vehicle, running the lights, and operating the air conditioner.
* The alternator may not be compatible with the vehicle's computer, which can cause the engine to run poorly or even stall.
* The alternator may not fit properly in the available space, which can lead to problems with mounting the alternator and connecting the electrical wires.
For these reasons, it is important to use the correct alternator for your vehicle. If you are not sure which alternator is right for your vehicle, you can consult with a qualified mechanic.