Alternator life

4wordSOUL

Member
My '04 V8 Sport went 183k before my alternator started to die, some internal part failed and it started to make a bunch of noise but it still lasted 380 miles back from camping before I got it fixed.

What do you think, decent lifespan?
 
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I would say so.
I've replaced several alternators but those were all on vehicles with under 100k miles on the odometer.
My '04 sport V8 has 154k miles on it and the original alternator is still going strong.
 
Alternator

I have an 03 V8 with the current mileage at 281k, the alternator went out at around 235k I just replaced it with OEM since it last that long.
 
Mine went at 240,000 ish, 07 V6. Right after a several thousand mile road trip.
Which brings me to my next point, that alternator was on my mind for at least the last 75K miles but I thought it was cool to push it. See how long it would go.
This road trip included 100's of miles with no cell, no gas, no towns so if it had failed it would've been bad. The other vehicle on the trip (05 Tahoe) actually had the alternator fail but luckily we were already in Moab. Mine failed 2 weeks later at home which is a crazy coincidence.
My long winded point is yeah this isn't a service interval part but is it really worth pushing it? If my family had been with me and it did fail I can't imagine the drama with no cell signal in BFE.
Your mileage may vary
 
I keep reading this thread title as 'alternator liiiyyyfe!'

I replaced my 4.7 Tundra's alternator around 210k, and it was the original part working just fine.
 
My ‘07 Sport just turned over 212K miles today and I’m still on my original alternator as far as I know. I bought the truck with 96K and don’t recall seeing a replacement listed in the Toyota service records.
 

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