I've been trying to find OEM parts to do an alternator rebuild on my 2005 100 series; but I have only been able to find made in China replacements for the rectifier and voltage regulator.
So this made me wonder, do the Denso "factory" rebuilds use chinese made rectifiers / voltage regulators replacement parts? Or can they source OEM/JDM/Denso replacement parts?
Toyota does list the combined stator, rectifier, and voltage regulator part #
27039-50370 or
27360-0L021 at >US$500. But not separately and is way more than a remanufactured Denso (210-0607)!
Another interesting finding when researching is that the Toyota 130A 100 series alternator uses avalanche diodes (05-07 trucks)?
The rectifier replacements I've been finding say they are avalanche diode based. The rectifier replacement part number is INR422 (copper heatsinks) or INR433 (aluminum heatsinks) with the following specifications: 117mm OD, M8 x 1.25 Batt. Term, 12-50A avalanche diodes.
The cross listed Denso p/n:
021580-6520
The closest rectifier I can find that is an Toyota OEM part is for the 120A alternator for the 105 series:
27357-17230
New Era has a rectifier p/n:
D-097
The voltage regulator replacement is IN6015 (no luck in finding a made in Japan part) with the following specifications: 12 Volt, B-Circuit, IG-S-L-M(FR) Terminals, 14.2 Vset.
The cross listed Denso p/n:
126600-0150
Interestingly, IN6004 looks to be 1 to 1 fit (but not having them physically side by side not 100%), has a higher Voltage set of 14.5.
Also IN6315 looks to be 1 to 1 fit (4 pin squarish plug, but not 100% they would be compatible), has a higher than stock voltage set of 14.35.
The closest voltage regulator Toyota p/n:
27700-50040 has the right connector shape but much larger body.
Oh, New Era a japanese parts company makes a replacement voltage regulator p/n:
IVR-5017 this looks to be the best bet for JDM replacement part, but not one seems to stock it stateside.
The first alternator replacement bearing is Toyota P/N:
90099-10142 which are bearing std size 6303 : ID x OD X W: 17 x 47 x 14 (mm)
The second alternator replacement bearing is Toyota P/N:
90099-10140 which are bearing std size 6202W: ID x OD X W: 15 x 35 x 15 (mm), (6202 is normally 13 mm wide).
The brush replacement is Toyota P/N:
27370-58460
Will update if I find anything more, but please correct if anything is erroneous! I also emailed New Era to find if they have any US distributors and to confirm that those 2 parts are made in Japan, I also asked them (New Era) if they are the OEM manufacturer of the components.