Alternator whine

Joined
Jan 2, 2025
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192
Location
NJ
Hey guys. A friend of mine has a 2009 Camry 4 cyl and the alternator is whining. The car has over 200k miles on the original alternator. Yes, you heard it right. Question is should I go with Denso reman or new alternator like BBB industries? Any other suggestions?
 
How easy is it to replace?

My general rule is, if it is an easy job (IE on top of the motor, couple bolts 15 min job done) then I will take the chance of a (decent name brand) reman/new unit (with a decent warranty)

If it is a real PITA to replace, I'll get the best thing I can put hands on so I only have to do the job once.

In reality, there's a whole lot of junk out there now, some with good names on them, and some with garbage names on them.
 
Although yes, the alternator could be on its way out with >200K miles on the vehicle.
However, how is the alternator charging?
Is it doing its job?
And has the battery been tested?
Alternators will struggle/whine to keep up with a weak battery.
Just a thought!
 
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