disney7

Anyone know any easy way to tell the difference between an NA (internally regulated) and NB (regulated by ECU) alternator?

I built a turbo 1.8 using a Hydra Nemesis when they first came out. I can't remember if I used the NB alternator from my donor block or the NA alternator than came in my '99. It has been working great for years, but the alternator is crapping out on me now and, for obvious reasons, I don't want to buy the wrong replacement.

Thanks

gjsmith66

Google?

disney7

Tried that and came up dry.

gjsmith66

Go to Amazon or RockAuto, look at the pictures for a 94 or 2004. The Denso pictures seem to show the clearest differences...

Savington

iTrader: (31)

There should be an identifying sticker on it.

good2go

iTrader: (2)

I could be wrong, but I thought the plugs were different.

rlogan

iTrader: (21)

I know this thread is old, but just in case someone does run across it. The plugs are not different...there is nothing mechanically to keep you from accidentally putting an 99-00 alternator on an NA. It will however very quickly cook batteries and many other things. Ask how I know...

douginjenison

iTrader: (1)

FWiW