Q: 2007 Lexus IS 250 needs an alternator.

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Hey Steve do I need a alternator that 13 volts are higher for 2007 Lexus IS 250 or can I use one with 12v

My car has 15000 miles.
My car has an automatic transmission.

All alternators on the 12 volt systems have a voltage rating of 13.5 to 14.7 volts. If you are referring to having a more powerful alternator, then you will need to get an alternator with a higher amperage rating. If you need further assistance with your alternator, then seek out a professional, such as one from Your Mechanic, to help you.

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