420A Alternator

[Ogparker915]

My alternator gave out on me, anyone know reliable ones to get I see them new go for about 150, but I heard they aren’t the best and have to switch them out soon, and the ones that go for around 230 are pretty good can anyone confirm?

 

[curt-s]

Is your alternator sufficiently insulated from heat from the o2 housing/downpipe?
There's rewounds you can get but if you've got little to no heat barrier between the two, a $250 unit will last as long as an $80 one.

 

[Ogparker915]

Is your alternator sufficiently insulated from heat from the o2 housing/downpipe?
There's rewounds you can get but if you've got little to no heat barrier between the two, a $250 unit will last as long as an $80 one.

I’ll have to check, I notice that after about an hour it does die on me so maybe it could be the heat. I just saw some reviews on the ones that cost 100$ and they mainly said they have to replace the alternators very often

 

[99dsmer4g63]

If this is truly for a non turbo 420a engine heat is not a concern like the 4g location.

-Daniel

 

[curt-s]

Weird, I did not see a 420A tag on the post when I read it initially. Ignore my dp/o2 question.

 

[BLACK'98DSM]

The OEM alternators are Denso. There are tons of aftermarket options, but ACDelco is the only name brand I've ever heard of. I wouldn't be opposed to getting a used part if it tested well. This is probably a case where OEM is better. And while heat isn't a concern, ensure that the valve cover gasket is not leaking. That will quickly saturate the alternator.