Carpokes Porsche Forum

My rate for a 90 or 115A OE Bosch alternator is $375, plus a core charge of $300. My preference is surely to receive the original alternator back to allow continued rebuilding....

Sadly, yes, these alternators are now getting crazy expensive. A quick review of Pelican shows a rebuilt unit is now over $1300 with a hefty core charge... 944 Online has been out of stock for months...
https://www.pelicanparts.com/More_Info/ ... DID=282971

Rick
Wisconsin

rheidtman wrote: Mon Jan 26, 2026 9:53 am My rate for a 90 or 115A OE Bosch alternator is $375, plus a core charge of $300. My preference is surely to receive the original alternator back to allow continued rebuilding....

Sadly, yes, these alternators are now getting crazy expensive. A quick review of Pelican shows a rebuilt unit is now over $1300 with a hefty core charge... 944 Online has been out of stock for months...
https://www.pelicanparts.com/More_Info/ ... DID=282971

Rick
Wisconsin

Thanks Rick. When I was changing over to the Nissan alternator, I was reminded that not all 'rebuilds' are the same inside. The one from eBay looked old and ratty inside. A best I could tell, the stator and rotor were untouched and grungy. Seemed like they replaced or repaired the regulator and changed the bearings, and called it done. In my case I had two different units fail when the winding broke where they connect at the end. When I then sourced a higher-quality rebuild, the difference was dramatic -- everything looked basically new inside. That's my wind up for asking what goes into your rebuilds? Would love to see pictures or otherwise get a sense for what is/isn't addressed on the units you sell.

Tom wrote: Mon Jan 26, 2026 10:09 am

rheidtman wrote: Mon Jan 26, 2026 9:53 am My rate for a 90 or 115A OE Bosch alternator is $375, plus a core charge of $300. My preference is surely to receive the original alternator back to allow continued rebuilding....

Sadly, yes, these alternators are now getting crazy expensive. A quick review of Pelican shows a rebuilt unit is now over $1300 with a hefty core charge... 944 Online has been out of stock for months...
https://www.pelicanparts.com/More_Info/ ... DID=282971

Rick
Wisconsin

Thanks Rick. When I was changing over to the Nissan alternator, I was reminded that not all 'rebuilds' are the same inside. The one from eBay looked old and ratty inside. A best I could tell, the stator and rotor were untouched and grungy. Seemed like they replaced or repaired the regulator and changed the bearings, and called it done. In my case I had two different units fail when the winding broke where they connect at the end. When I then sourced a higher-quality rebuild, the difference was dramatic -- everything looked basically new inside. That's my wind up for asking what goes into your rebuilds? Would love to see pictures or otherwise get a sense for what is/isn't addressed on the units you sell.

Tom - I am so happy you shared these questions as all rebuilds are surely not equal.
Here is what my process consists of:
1) initial function test
2) tear down and inspection
3) soak all components in an ultrasonic tank
4) fully clean, test, and service the stator, commutator, and rectifier (replace diodes if faulty)
5) inspect slip ring and service/replace as needed
6) install new bearings
7) install new VR
8) install new capacitor
9) reassemble and function test
10) my preference is to leave the cases in original aluminum finish, but polish and/or paint depending on condition

All come with a 12 month, zero-hassle warranty. Also, I rebuild these based on request and require a bit of time to rebuild. Also, for those desiring to retain original parts, you can also send your alt for rebuilding.

Satisfaction guaranteed and always veteran/first responder discount.

rheidtman wrote: Mon Jan 26, 2026 9:53 am My rate for a 90 or 115A OE Bosch alternator is $375, plus a core charge of $300. My preference is surely to receive the original alternator back to allow continued rebuilding....

Sadly, yes, these alternators are now getting crazy expensive. A quick review of Pelican shows a rebuilt unit is now over $1300 with a hefty core charge... 944 Online has been out of stock for months...
https://www.pelicanparts.com/More_Info/ ... DID=282971

Rick
Wisconsin

Thanks Rick!
This needs to be a sticky

I was reading a thread on here a while back, and someone highly recommended this company on ebay, and that the company has been doing high quality rebuilds for years. I saved the ebay link so I could later find it when my alternator will inevitably need to be replaced.

https://ebay.us/m/Fv4FLq

If I remember correctly, the thread mentioned you could call them up and specify the amperage you'd like (or something to that effect).

Just another option for people to consider.

Cheers

EDIT
Here's the thread:
https://www.carpokes.com/viewtopic.php?t=4260#top

What's the trick to getting more amps from the original alternator? Is there any downside to that modification?

Gaspowered wrote: Tue Jan 27, 2026 11:03 am I was reading a thread on here a while back, and someone highly recommended this company on ebay, and that the company has been doing high quality rebuilds for years. I saved the ebay link so I could later find it when my alternator will inevitably need to be replaced.

https://ebay.us/m/Fv4FLq

If I remember correctly, the thread mentioned you could call them up and specify the amperage you'd like (or something to that effect).

Just another option for people to consider.

Cheers

EDIT
Here's the thread:
https://www.carpokes.com/viewtopic.php?t=4260#top

You are 100% correct and I actually have one of these 200 AMP BNR on my car. I plan to do more research on this too, but I can say the upgraded unit weighs the same as the OE unit. Meaning, there are not more copper windings inside, but rather a creative wiring solution. More to follow...

chrischrischris wrote: Wed Jan 28, 2026 12:44 am What's the trick to getting more amps from the original alternator? Is there any downside to that modification?

As noted, I have one and have been running it for years with no issues. That said, more power = more heat. And in the very hot, turbo-charged application, it is possible more heat can shorten their lives. All the more reason to ensure the rear plastic duct and cooling hose are in good repair.

I'd guess that the 200A alternators may be capable of providing that current output, but it wouldn't produce extra heat unless you are actually drawing more current, right?

I'm thinking that you may benefit by having the "headroom" but you would rarely or never use it, unless of course you were running high power audio or lighting.

chrischrischris wrote: Wed Jan 28, 2026 12:38 pm I'd guess that the 200A alternators may be capable of providing that current output, but it wouldn't produce extra heat unless you are actually drawing more current, right?

I'm thinking that you may benefit by having the "headroom" but you would rarely or never use it, unless of course you were running high power audio or lighting.

That's correct - the alt will only supply the need based on draw. My '15 Panamera Turbo S alt is rated at 190 amps - and needs all of that due to the overly engineered electrical demands.