Hi guys, my 348 has an alternator issue. The technician has told that it should be a matter of the voltage regulator or diodes plate. Any one has other suggestions? It would be appreciated if someone can suggest me where I may find those spares and if possible recover something coming from other brands. Thank you Raoul
I recall you have a very late model car. Do you know which model alternator you have? You need to know brand, plug type, power rating, etc. There are probably dozens of detailed posts on this subject on the forum. e.g. https://www.ferrarichat.com/forum/threads/348-alternator-removal-rebuild.142329/
Yes, I have the model, the alternator is a nippondenso 1012115071 (ferrari code 155785), thanks for help! Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
I know you're not replacing the whole unit, but just a word of warning... I replaced my alternator (entire unit) a year ago on my 348 in the UK, and the part (sent directly from the OEM) was incorrect - I mean the actual unit itself. Literally, we ordered the correct part, received a part badged up with the correct part number, and found that Nippondenso themselves had mistakenly labelled a completely different batch of alternators with the one used on 348s! So if you're taking parts from a correctly badged up alternator, double-check that it's not just the badge that is correct, but the unit itself also.
It looks like that Ferrari part number has been superceded by P/N 70000809 which has the 105amp rating: https://www.ricambiamerica.com/catalogsearch/result/?q=70000809 This is more complicated than I thought. There are concerns about case size and post sizes. Also, if "11M 16" is a date, it looks like your regulator is less than 4 years old (?) I wonder how sure he is. The 348 alternator seems to have a few "issues". Do you have 2 earth straps on your alternator?
Those two things (diode pack, and regulator) are both available in the US from a number of places. I buy them directly from the Auto Electric guys who rebuild the alternators.
https://www.ebay.com/itm/Ferrari-F355-355-Alternator-Rectifier-Regulator/223109686375?hash=item33f25fa467:g:CaMAAOSwj~9behnG#vi-ilComp https://www.ebay.com/itm/Ferrari-F355-355-Alternator-Regulator/223109691383?epid=235922356&hash=item33f25fb7f7:g:3E8AAOSw-ctbejH8