Alternator life expectancy ??

When did your alternator shite the bed ?? Any replies and or links for alternator life expectancy appreciated.

 

218k and still going but only because I have a replacement waiting.

 

2009 at 193k with no plans to replace it.

 

my 2013's went @ 120ishk miles... it was actually just one of the diodes on the board not the alternator; brushes, bearings everything else looked n felt great. Needed a replacement ASAP so went with a napa denso reman'd unit. I have a good hunch the diode that went was caused by excess heat from the exhaust manifold (as it was the closest one) and TONS of WOT 1-3rd gear pulls for random tuning via HPtuners.

 

'09 with just over 200k and still going although my mechanic said that it would likely need replaced in the next 6 - 12 months...

 

My Alternator is doing great. But my A/C Compressor took a GIANT shit at 69,000.

 

Do a search here, the brushes can be changed on some. Much cheaper.

 

I’m at 151k
That’s all I got to say……

We don’t talk about things we don’t want to work on. We ignore them.

 

165k and still going on my 07

 

Bearings seized at 11 years/112K miles.

 

Toyota and denso make some good alternators. My 4runners alternator is 26 years old at 300k miles. My wife's Tacoma 10 years and 200k miles.

 

Thanks for all the replies - miles certainly vary from Leomania 112k to JayRolla 300K. Wonder how much work it is to change brushes like Killowatt suggests - I'll check it out.

 

my 09 Taco only has 62 k..So no issues...My 98 Cherokee XJ is going strong with its original alternator at 160K

 

My '06 lasted 238k. It still worked, but those bearings were nasty.

 

approx. 100,268 miles

 

I replaced mine with Denso rebuilt at 150,000. No issues with it, just preventive maintenance.

 

replaced around 130k in 2021 after started squealing, 2007 prerunner 4.0L

 

Mine died after 9 years and 180,000 miles. Only significant part that isn't from the factory so I ain't complaining.

 

Do you have any info handy - part number - where bought - how much - core charge used etc. Any info appreciated.

 

Doesn't seem 2 B any particular mileage for preventative maintenance - replace or rebuild.