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Different alternators on '99s?


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My parts guy is well known in the 928 world. He's attmepting to order me a new alternator for my 1999 996 with 6 speed but he is getting conflicting info from suppliers.

I understand that there is a difference between an alternator with a clutch (for manual cars) and one without (for automatics). Two of his suppliers are saying that my car doesn't need the clutched alternator because it is a 1999 and none of them had it until 2000.

Has anyone heard this before? All info I've seen says that there is no differentiation between a 6 speed '99, '00, or '01.

Thanks.

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Not 100% sure on this but per Porschepartshub and autoatlanta, it does seem like '99s only use the plain pulley 99660315156, regardless of the transmission.

 

http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=996-99-05&section=902-05

 

http://www.porschepartshub.com/auto-parts/1999/porsche/911/carrera-trim/3-4l-h6-gas-engine/electrical-cat/alternator-scat

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Not 100% sure on this but per Porschepartshub and autoatlanta, it does seem like '99s only use the plain pulley 99660315156, regardless of the transmission.

 

http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=996-99-05&section=902-05

 

http://www.porschepartshub.com/auto-parts/1999/porsche/911/carrera-trim/3-4l-h6-gas-engine/electrical-cat/alternator-scat

 

Porsche parts list the alternator both ways in 1999, so it did exist with the free wheeling pulley that year..

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According to the parts system, you should have a free wheeling pulley on the alternator.  That said, if the car does not have one, and you are not the original owner, it may have been changed out at some time.

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Engines with a freewheel pulley have plastic rollers, with a fixed pulley they use metal rollers. There may always use a freewheel pulley regardless of the used rollers, not the other way.

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Engines with a freewheel pulley have plastic rollers, with a fixed pulley they use metal rollers. There may always use a freewheel pulley regardless of the used rollers, not the other way.

Forgive my ignorance on this, but what "rollers" are you referring to?

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Engines with a freewheel pulley have plastic rollers, with a fixed pulley they use metal rollers. There may always use a freewheel pulley regardless of the used rollers, not the other way.

Forgive my ignorance on this, but what "rollers" are you referring to?

 

 

The other pulleys in the serpentine system.

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