In the 360K and 27 years I've had my 4Runner, Iv'e gone through a few alternator set ups.

The current alternator - a 140A Nippondenso alternator, seems to like breaking the alternator bracket

So, to save all the YotaTech members from falling prey to over priced ebay parts

http://www.ebay.com/itm/like/222216206512

I did a tad of research for you.

The OEM part number is 16381-35021

And, at least as of this posting - was under $20

http://parts.lakelandtoyota.com/p/TO...638135021.html






New Shiny
It looks thicker

 

There has to be something wrong that so much tension is on that bracket

Is the alternator case either wider or smaller then the original

The only thing I can think of .

I hope this new one lasts for awhile .

 

yes, it doesn't seem like normal behavior.

was the long bolt on the bottom tightened up all the way? that's what holds the alternator down.

 

my alternator bracket broke - I did the jaguar upgrade... so my assumption is larger alt, more tension, more breaky (in general, i did read that ewong had a non-stock alt)

 

I think I noted Im running a 140A nippon densio alternator; its NOT stock!

You can see where the boss is - on the back side, its been dreaml-ed / ground down to give clearance for the coolant hose.

Also - at one point, the bottom bolt vibrated out and thus there was extra stress on the bracket.

Anyway - Im still using the broken bracket as the washer seems to hold everything in place OK

its on my list to get to (R&R) but the truck isn't a daily driver, so I am more in a hurry to get the mouse cage in, than I am to deal with the alternator bracket.

 

Mine broke too. Welded it up with a bit of added security.