Hi,

quick question, will an alternator from a Impreza sport 2001 fit a wrx 2004 ?

Cheers

Bob

 

My first question would be "does it have enough amperage"?

 

There's a high risk it will not.

At some point (which I think was during bug eye models), there was a change to the smart alternator charging "stuff". Basically the third pin on the alternator was actually used (or used differently).

I tried a bug alternator in my WRX,and it didn't work (it kept charging all the time, and the ECU raised a fault code immediately on start, and check engine came on).

The alternators have a little wiring diagram on them on the silver label (or is it a green). As far as I know,the label must match for the alternator to work (+ probably amps too).

There's a small risk the alternator I tried was from a late classic as it was bought from eBay, but according to the seller (a well established breaker), it was a bug alternator.

 

Cheers for the advise mate. Yeah been told it will not fit, managed to find one that fits so all is good.

Thank you.