Is Diode pack for Denso available ?
Thread Starter
CF Veteran




Joined: Mar 2016
Posts: 3,816
Likes: 725
Year: 96
Model: Cherokee (XJ)
Engine: 4.0
I have a situation where I have 5 out of 6 Denso 90A alternators failed, looks like the diode regulating pack has failed
I am in Australia, so will chase local parts, but it is sometimes easier and cheaper to import direct from USA
Is anyone able to advise source or part numbers for this item please ? (for the diode regulator pack)
Any other details welcome
Rock Auto would be good, but I cant seem to find it listed separate, and even Google/Ebay does not set me straight
As I am in Oz, it may not be easily possible for me to "upgrade" (but I would install any OEM item that works)
My auto electrician advises me that any Chinese replacement alternator or part is crap, especially the diodes
He advises the OEM units are very rugged, so if I can get me a hold of some good ole made in USA (or at least not China) regulator diode packs, I will
He has a waiting list weeks, maybe months long, so I am trying to progress things myself
I have 3 x '96. so it would appear the original diodes have a lifespan of ~ 27years
I am in Australia, so will chase local parts, but it is sometimes easier and cheaper to import direct from USA
Is anyone able to advise source or part numbers for this item please ? (for the diode regulator pack)
Any other details welcome
Rock Auto would be good, but I cant seem to find it listed separate, and even Google/Ebay does not set me straight
As I am in Oz, it may not be easily possible for me to "upgrade" (but I would install any OEM item that works)
My auto electrician advises me that any Chinese replacement alternator or part is crap, especially the diodes
He advises the OEM units are very rugged, so if I can get me a hold of some good ole made in USA (or at least not China) regulator diode packs, I will
He has a waiting list weeks, maybe months long, so I am trying to progress things myself
I have 3 x '96. so it would appear the original diodes have a lifespan of ~ 27years
CF Veteran
Joined: Jun 2022
Posts: 1,110
Likes: 232
From: England
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Not bad, damn sure the XJ wasn't meant to last 27 years 
Found what I think you want in Italy, on UK eBay - but my Bosch alternator was cheaper (albeit a couple of years ago)

Found what I think you want in Italy, on UK eBay - but my Bosch alternator was cheaper (albeit a couple of years ago)
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