Alternator Compatibility

4 posts in this topic

Hi, I know that there can be problems if wrong alternator is fitted; my alternator failed (is not charging properly) so I took it down to check the brushes (they seem fine) so that was my attempt to fix the existing alternator. 
I went to scrap ward and found a an alternator on a car, I took if down and I am ready to fit it on my car. The problem is that on my car at the PHIN connector there are 2 black wires, while on the one from scrapyard there was only one white small wire.
I am wondering if anyone has the expertise to confirm whatever or not the 2 alternators are compatible (i.e. fitting the scrapyard alternator won't damage my car).
I will attach pictures of 
1. my existing alternator code 
2. scrap yard alternator code 
3. back of my alternator (the plastic only as it has been taken of my alternator  when I checked the brushes)
4. the back (connectors) of the scrapyard alternator (connectors are cut off so they are visible) 

Any help will be appreciated, as I don't want to waste time fitting an incompatible alternator at the best or damage my ECU at the worse 

Please note that the code on the alternators are similar, the amps are the same, and the back plate is identical, but as I said my car has to black wires going to the PHiN while the scrapyard one has only a thin white wire (as per picture)
Please also note that on my alternator (as it is the case on the scrapyard alternator) there are 3 pins on the back but the middle one is not used 

Please see the  label info extracted from the attached pictures
my existing faulty alternator
Denso 63321658  A115I     75A
05901/2   DC      A1601540301      14V

the scrapyeard alternator 
magnet marely 28410/2  MAN1009
063341658101 A115I       14V      75A

Please note that even-though the scrapyard is a different make (on the plastic where the label is located on the side it is still printed Denso) 
Thank you 

scrapyeard alternator back connectors.jpeg

existing alternator back connectors.jpeg

scrapyard alternator code.jpeg

existing alternator code.jpeg

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Hmmmm....from looking at the two backing plates they are identical and both show no signs of being used on the centre pin. Only the two outer pins. All the numbers match up except what seems like product numbers for different companies perhaps.  I would use it if everything bolts up the same etc    But don't quote me on it.....if it was me I'd risk it.  But would also have a volt meter attached to see what it produced when running with and without a load.  What about how far out the main shaft sticks out as that is the main thing to worry about after the specs and mounting points.  It must be identical also..


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B+ is for the output to battery

D+ is for idiot light (if equipped)

PHIN is for ecm controlled charge rate 

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Thank you for your responses, 

just to confirm, they are compatible

I just fitted the one from scrapyard and it is working fine

just in case someone else will have the same problem, if the models are the ones I had, they seem to be 100% compatible 

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