Need 928 102 139 12 crank pulley

[Mat 71]

Hi everyone!

Anybody have a new/good used crank pulley they want to part with!?

Thanks! Mat

[teutonic]

928 Intl lists used for $150- U928 102 139 11. Pretty sure that's the same as the -12 pulley.

[stepson]

I actually might have one. Let me check tomorrow.

[Mat 71]

Thanks for the responses.

'stepson'...I will wait to see if you do have one before moving forward.

Mat

[stepson]

Sorry I wasn't able to get by the storage this weekend. I will try to go by there tomorrow or Tuesday. Pretty sure I have one though. I'll let you know.

[stepson]

The part number for the one I have is 928 102 139 03. It does have the flat alternator belt pulley

[Mat 71]

So forgive my ignorance...I think that pulley is technically for '83/'84'ish?

Will this work on my '90 S4? What is the difference between 928 102 139 - 11, 12, & 03 which is the one you have?

Car is currently at shop doing T Belt with Porken tensioner from Roger at 928srus.

The pulley is really worn as it appears to have been put back on incorrectly at some point in the past.

Thanks!

Mathew

[stepson]

Originally Posted by Mat 71

So forgive my ignorance...I think that pulley is technically for '83/'84'ish?

Will this work on my '90 S4? What is the difference between 928 102 139 - 11, 12, & 03 which is the one you have?

Car is currently at shop doing T Belt with Porken tensioner from Roger at 928srus.

The pulley is really worn as it appears to have been put back on incorrectly at some point in the past.

Thanks!

Mathew

Yes this pulley came from an 83. I actually didn't remember that they changed from a V belt for the alternator in 83. I had thought it was 1984. I don't know if this pulley will work for your application, but if the crank is the same diameter, I would think it would work. I just don't know for sure. maybe somebody else will chime in, but I don't know any reason why it wouldn't work.

[Mat 71]

So I was just looking at 928srus and they have the pulley listed as '83 to '91 bearing 928 102 139 11, so now I am not so sure that your pulley won't work.

I will get a pic, and comment from the shop tomorrow and see what is said about the pulley coming off of my car. Maybe this one will work that you have, and Porsche just changed the numbers as the years went on, but the pulley is the same.

I will comment tomorrow when I search out further details...

Thanks,

Mat

[Mat 71]

Nope, not interchangeable by looking at picture comparison.

The one coming off of my car has more grooves on the large diameter pulley.

Thanks for sending me what you had!

Mat

[stepson]

Well Darn. Sorry I couldn't help.