the voltage regulator on My Polaris Magnum 4x4 got damaged and I need to replace it. Where can i get one? Are there other voltage regulators that are interchangeable? Without the regulator the light don't turn on and my battery eventualy dies so I need it.

 

You could do a search on ebay for a used one.

 

Try Partsland.com You can get the part number off of there and cross reference with the voltage regulators for the other models. That way you will have more of a selection if you want to try and find a used one.