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Old 02-10-2026, 05:40 PM
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Quote:
Originally Posted by Bdc101 View Post
I just checked and Valeo is the original manufacturer for the 220-amp alternator on my 35d (according to RealOEM).


Part number 12317603775 is the voltage regulator and is only about $60 for a Valeo version. Andrew, do you know if I need any special tools to remove the voltage regulator? The last time I did this was on a Toyota about 15 years ago and it was just attached to the end of the alternator. But FCP has a bunch of "decoupler" tools in their section for the alternator. Just want to check before I take the car apart.


Edit: Nevermind, it appears you can access it on the back of the alternator if you take it off.
Valeo 220A and the same part number for my 2011 35d.

The decoupler is a overrunning or clutched pulley that diesels should have on their alternators. INA, BMWDieselParts, and Litens all make the correct pulley. I plan to use a Litens when I rebuild mine. These type of pulleys require a tool, not exactly a tool, but a technique to remove the pulley. Basically a socket with wrench flats and a hole to pass the Torx bit through.
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