Best 130amp Alternator - Denso?

[lbear]

Well, my OEM Denso alternator (Made in Japan label) part # 104210-3300 is starting to make a bearing noise that gets pretty loud. Time to replace it but what alternator is it best to go with?

My current part # shows it is a 130 amp alternator.

AutoZone has the Duralast Golds for $250 with lifetime warranty.

RockAuto has a Denso remanufactured with a 12 month warranty for $200 - $80 core:
Rock Auto - Denso

Any input on alternators?

 

[MelsRegal]

Look at NAPA prices

 

[BuickGirlFromMars]

Well, my OEM Denso alternator (Made in Japan label) part # 104210-3300 is starting to make a bearing noise that gets pretty loud. Time to replace it but what alternator is it best to go with?

My current part # shows it is a 130 amp alternator.

AutoZone has the Duralast Golds for $250 with lifetime warranty.

RockAuto has a Denso remanufactured with a 12 month warranty for $200 - $80 core:
Rock Auto - Denso

Any input on alternators?

do you specifically want to have that kind again?, there is a thread on park avenue forum about this

An Ultra should have eithr a AD237 or a Nippendoso(I spelled that wrong) model that I showed before.
heres the Japanese alternator, 140 amp, if needed:
Part# 334-2858 - ACDelco
Part# 19343570 - GM
OEM: 25758345

This is what an AD237 looks like:
View attachment 35427
thats my original AD237 on my 1999. A 2004 may, if it has it, look different, but if it says Delphi on the front case you have An AD, if it doesnt, it may be the other. Pic of yours?

An ultra SHOULD have one or the other, so that should help reduce the possibility of fitment issue. The Japanese alt appears ot have the same mounting ears as the AD237 so you shouldnt have a problem there.

2004 Buick Park Avenue Ultra Alternator Amp rating heres the whole thread

Yours may look like this ish?

 

[BuickGirlFromMars]

I realize that was an 04 ultra, so to double check I went and punched in a 2004 lesabre so you dont get the wrong part numbers/you see the options

 

[lbear]

do you specifically want to have that kind again?, there is a thread on park avenue forum about this

2004 Buick Park Avenue Ultra Alternator Amp rating heres the whole thread

Yours may look like this ish?

Yes, it does look like that. I will check my RPO code but here is a pic of the alternator:

 

[BuickGirlFromMars]

It looks like the 140 amp, KG_ whatever 140 was


kg9

 

[Mad_Coachman]

I've used this company Pure Energy from my local parts house. They don't deal with junk as they are a long established business in my area...Colvin Motor Parts.

More Information for PURE ENERGY 11035

 

[lbear]

It looks like the 140 amp, KG_ whatever 140 was


kg9

Just looked at my Option Broadcast Sheet. It shows KG9 Generator

 

[lbear]

I've used this company Pure Energy from my local parts house. They don't deal with junk as they are a long established business in my area...Colvin Motor Parts.

More Information for PURE ENERGY 11035

Inexpensive at $44 with a core return. Are they US made or overseas?

 

[BuickGirlFromMars]

Inexpensive at $44 with a core return. Are they US made or overseas?

if you do get that option pay the core charge and get your OE rebuilt. Its still a quality alternator and remans can be ticking time bombs, plus, its a 140 amp factory alternator that works on most 3.8s, easily adaptable even if it wasnt, a different case shell and it can go on any number of trucks etc

 

[Mad_Coachman]

I used this in my car. Mine has DELPHI stamped on the front.

More Information for PURE ENERGY 8285612

 

[lbear]

if you do get that option pay the core charge and get your OE rebuilt. Its still a quality alternator and remans can be ticking time bombs, plus, its a 140 amp factory alternator that works on most 3.8s, easily adaptable even if it wasnt, a different case shell and it can go on any number of trucks etc

Is there an alternator rebuilding service that is trustworthy or is it all regional and hit and miss?

If the current alternator is technically 130amp, going to a 140amp shouldn't be an issue, right?

 

[lbear]

BBB Industries (Genco, Vision DE, Wilson branding) sells a BRAND NEW Nippodenso 140amp alternator with a 3 year/36k mile warranty for $140. Probably buy that one. Since it doesn't require a core, I can keep mine and rebuild it locally with a trusted shop and have a spare alternator.

Rock Auto BBB Nippodenso 140amp Alternator

OR

Rock Auto REMY 140 amp Alternator

The Delco Remy unit is $125 and also new and comes with a 2 year warranty BUT it is manufactured in CHINA.

The Reman units are sometimes hit or miss depending on WHO and WHAT company rebuilt it. They only come with 1 year or maybe 2 year warranties.

 

[JGBuick]

BBB Industries (Genco, Vision DE, Wilson branding) sells a BRAND NEW Nippodenso 140amp alternator with a 3 year/36k mile warranty for $140. Probably buy that one. Since it doesn't require a core, I can keep mine and rebuild it locally with a trusted shop and have a spare alternator.

Rock Auto BBB Nippodenso 140amp Alternator

OR

Rock Auto REMY 140 amp Alternator

The Delco Remy unit is $125 and also new and comes with a 2 year warranty BUT it is manufactured in CHINA.

The Reman units are sometimes hit or miss depending on WHO and WHAT company rebuilt it. They only come with 1 year or maybe 2 year warranties.

I'm all about rebuilding and yet.... finding a local re-builder appears to be a real chore. Rock Auto shows 105 Amp options for my 2001 LeSabre.

It would be nice to find something with a bit more output, but whatever... not reinventing the wheel here.

My main concern would be longevity since that thing does spin like crazy all the time. I can see where "quality" is an important factor here.

 

[lbear]

Went to NAPA to check out their alternator:

Suprised the test sticker shows 103 amps at 2000 RPM and only 135 amps at 6000 RPM. I thought a 140 amp alternator would put out more amps at lower RPMs and not require 6000 RPM to see peak amps.

Hopefully the black windings is from spray paint and not burnt windings :0

 

[JGBuick]

IBear - You stated in your OP... "My current part # shows it is a 130 amp alternator."

Rock Auto on shows 105 amp versions AFAIK. Are you sure yours is a 130 amp? I would imagine Rock Auto would list a premium unit if they had one available. From what I know... It's also about parasitic loss on the drive train. Spinning an alternator at high RPM isn't good for fuel economy. More amps at lower RPM would require a whole different alternator wiring. Maybe I'm wrong... but hopefully someone will chime-in.

 

[lbear]

Rock Auto on shows 105 amp versions AFAIK. Are you sure yours is a 130 amp? I would imagine Rock Auto would list a premium unit if they had one available. From what I know... It's also about parasitic loss on the drive train. Spinning an alternator at high RPM isn't good for fuel economy. More amps at lower RPM would require a whole different alternator wiring. Maybe I'm wrong... but hopefully someone will chime-in.

The part # on my current alternator comes back as 130/140 amp. The broadcast sheet also shows the code (KG9) for the 140 amp alternator.

The Buick's had either a 105 or 140 amp alternator. The LeSabre Limited's probably had the 140 amp because of the heated seats and other electric heavy options.

 

[Mad_Coachman]

The Buick's had either a 105 or 140 amp alternator. The LeSabre Limited's probably had the 140 amp because of the heated seats and other electric heavy options.

My Limited came with a 105 amp alternator so there goes your theory. 😀

 

[2004CSOTP]

Well, my OEM Denso alternator (Made in Japan label) part # 104210-3300 is starting to make a bearing noise that gets pretty loud. Time to replace it but what alternator is it best to go with?

My current part # shows it is a 130 amp alternator.

AutoZone has the Duralast Golds for $250 with lifetime warranty.

RockAuto has a Denso remanufactured with a 12 month warranty for $200 - $80 core:
Rock Auto - Denso

Any input on alternators?

Parts stores are typically the most expensive option but they are the most convenient. I've gotten into the habit of comparing prices on parts and supplies from parts stores with Rock Auto and Amazon and the parts store prices are always higher by a lot. The "lifetime warranty" from the parts stores isn't really lifetime. I took a bad "lifetime warranty" alternator back to Advance Auto Parts when it failed after 2 years. They swapped it, but told me they wouldn't do it again and that something was wrong with my car which was nonsense. The reality is that parts store alternators simply do not last as long as OEM. If you have some time and a spare car, rebuilding your original alternator is an option as well. There are still some shops that do this work, but if you are mechanically inclined, you can do it yourself. Rebuild kits are available online.

 

[JGBuick]

Parts stores are typically the most expensive option but they are the most convenient. I've gotten into the habit of comparing prices on parts and supplies from parts stores with Rock Auto and Amazon and the parts store prices are always higher by a lot. The "lifetime warranty" from the parts stores isn't really lifetime. I took a bad "lifetime warranty" alternator back to Advance Auto Parts when it failed after 2 years. They swapped it, but told me they wouldn't do it again and that something was wrong with my car which was nonsense. The reality is that parts store alternators simply do not last as long as OEM. If you have some time and a spare car, rebuilding your original alternator is an option as well. There are still some shops that do this work, but if you are mechanically inclined, you can do it yourself. Rebuild kits are available online.

Good info and lots of truth in this. I'd love to rebuild mine when the time comes... We'll see. I have little confidence in today's parts (Chinesuim etc.)
The idea of rebuilding the OEM seems a great way to avoid all of that...