Skip the auto shop - Our mechanics make house calls

Q: I was wondering if an alternator in a 2003 Lexus ES300 can go in my 2002 Lexus EX300. The connectors are a little different.

asked by on

finding interchangeable parts.

A: Hello. If the connectors are different, the...

Hello. If the connectors are different, then it is likely that the alternators are different. In some cases, the alternators may mount up similarly but will have different power outputs and capacities. Larger vehicles or vehicles with more accessories may require a higher output alternator than a smaller vehicle. I would try and source an alternator designed to fit that vehicle for best results. If you need help getting the correct part, a certified technician from YourMechanic can replace the alternator at your home or car's location using a fully compatible part.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car starts intermittently

Hi. The wires behind the dash may be related, but probably not. The vehicle should be checked for proper spark and fuel delivery when it is acting up. This can be done using a fuel pressure gauge to check for...

Q: Car dead

Hi there. A slightly open car door will leave your dome light on causing your battery to drain. If your battery drains completely it will need to be charged by a battery charger. A jump will only work if your...

Q: Car trying to start without key in ignition

Sounds like your starter solenoid may be installed incorrectly. The solenoid has several wires going to it. One to the stater, some coming from the battery, and one form the ignition switch. If the wires are connected on the wrong...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...