Asked by May 13, 2017 at 03:52 PM

Question type: Maintenance & Repair

I am informed that there are rebuilt kits for existing alternators .
Versus purchasing new or used rebuilt models .
what are the pro's con's ?

5 Answers


Probably having the proper testing equipment, and the tools to rebuild it yourself. You can never compare to a brand new OEM alternator, more money verses a rebuilt tho. Rebuilt alternators can last a long time, most do, some don't. So as far as rebuilding a alternator yourself, you would not be sure if it works right, and your time verses buying a rebuilt alternator that has ben tested, better off just buying a rebuilt if you want to go that rout.

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Of course the Pro is that you save money and the con is if it dosen't work than you will do the job twice (or more) then probably buy a rebuilt one anyway

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right , gotcha . . . Thanks another ? I have a 105 amp and power accessories like front seats windows dvd player cd changer , pro of upgrade to 130 ? I heard to much amp might help but neg- could bring heated wiring to other places ?

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The amount of current that flows threw your circuits is protected by the fuses. The amount of current depends one the call for the juice you need. If you have a big draw like a big stereo, or lots of lights to cause a big draw on the system, and everything is on at the same time, then the wiring system could heat up, which then should have bigger wiring to the accessories. Normal operation and having a bigger output alternator, there is not enough draw to heat up the wires.The voltage regulator takes care of the rest. I see no problem putting in a 130 AMP alternator.

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Alternator rebuild parts went out with buggy whips! You may be able to order the individual pieces such as the voltage regulator, diodes, etc. but by the time you do all that and the labor involved, you'll be better off buying a new or rebuilt alternator with a warranty. HTH. -Jim

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