Best Alternator for Toyota 4runner

Alternator replaced last year with OEM Denso, 13.5V when car is running

Similar symptoms when my '05 factory alternator died. Get a jump then measure the voltage at the battery. If it's ~14VDC, the alternator is charging. If it is only ~12VDC replace the alternator.

For anyone looking for a drop in upgrade, I used a 105 amp for a Suzuki. Made by Denso. No harness needed, plugs right in. Going strong for a couple years now in my 3rd gen.

I like the [Denso alt for a Suzuki](https://adventuretaco.com/go/denso-210-0461-105a-remanufactured-alternator/), which is plug-and-play and does 105A. That's a \~50% increase over stock and quite a bit less expensive than the TAE.

Owned a 4th gen 4runner for over 10 years. Boring to drive and look at, but it took a lot of abuse and never gave me any problems. It only had to be towed once due to the alternator going out on me 50 miles from home.

I’ve had two D/L Alternators. Each has lasted 3 or 4 years.

As someone pointed out, don't expect the 150 dollar alternator to last that long. I threw on my 4runner a few months back because that's all that was in stock locally and I'm gonna have to replace it again, it's already whining. I'd definitely spend $350 or whatever it is on a denso unit