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Mystery grommet on 2003 996 C4S

rrspikemarty
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rrspikemarty Member

rrspikemarty

Posted
Posted

Hi,

I have stock MY2003 C4S manual trans, coupe, USA. Today i loosened the air box and lifted it to do some cleaning underneath. The only things i loosened or removed were:

- removed single screw holding down the airbox assembly to the body,

- removed hose clamp on the hose to the throttle body, and separated the hose from throttle body,

- loosened one of the wire clamps on the MAF sensor lead to get some play,

- snapped out the oil filler hose.

Upon putting everything back together, I noticed a black rubber grommet on the floor where i'm working. I know for sure i did not remove it. It appears as if it may have been lodged under the airbox and fell out, when i lifted the airbox. Part number is 999 703 478 40. I have looked in PET and the part is listed for the 997 Carrera 2005 as a grommet associated with the 997 airbox, which is not the same as the 996 airbox. The part is not listed anywhere in PET for the 996 model.

Picture attached. Grommet is approx 1" long, 1.125" outside diameter across the top.

post-29822-1217812859.jpg

Can any gurus shed light on this? Do i need to find a home for it somewhere?

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rrspikemarty Member

rrspikemarty

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Probably some tech dropped it when working on your car.

It is used on all the 997 models (997, GT3, and 997TT).

Loren,

Thanks. That's what i was thinking. To confirm - this part does not belong anywhere on my car (i.e. for securing or dampening the air box, or whatever)?

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Orient Express Member

Orient Express

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There are 2 grommets like that on the bottom of the engine compartment under where the airbox goes. If you look at the bottom of the airbox, there are 2 pins that fit into the grommets which fit in the holes in the body. Chances are that one pin has its grommet and the other does not.

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rrspikemarty Member

rrspikemarty

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Are you sure it's not the bottom grommet, the one the pin goes into?

Rick

1999 C4

1987 944S

Yee-hah :D

You and Orient are absolutely correct. Two pins on bottem of box. One grommet stayed in place, the other had fallen out. This morning I removed the entire box and immediately saw what was going on.

I am intrigued as to why the PET didn't show/list the part. I wonder if anyone else has found porsche parts on their car that are not in PET....?

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jgriffin56 Member

jgriffin56

Posted
Posted
Are you sure it's not the bottom grommet, the one the pin goes into?

Rick

1999 C4

1987 944S

Yee-hah :D

You and Orient are absolutely correct. Two pins on bottem of box. One grommet stayed in place, the other had fallen out. This morning I removed the entire box and immediately saw what was going on.

I am intrigued as to why the PET didn't show/list the part. I wonder if anyone else has found porsche parts on their car that are not in PET....?

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Loren Member

Loren

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Are you sure it's not the bottom grommet, the one the pin goes into?

Rick

1999 C4

1987 944S

Yee-hah :D

You and Orient are absolutely correct. Two pins on bottem of box. One grommet stayed in place, the other had fallen out. This morning I removed the entire box and immediately saw what was going on.

I am intrigued as to why the PET didn't show/list the part. I wonder if anyone else has found porsche parts on their car that are not in PET....?

The part IS in PET but it is only listed for the 997 series cars.

Chances are they just forgot to refer the old part number in the 996 to the newer part number.

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  • 4 weeks later...
judgejon Member

judgejon

Posted
Posted
Are you sure it's not the bottom grommet, the one the pin goes into?

Rick

1999 C4

1987 944S

Yee-hah :D

You and Orient are absolutely correct. Two pins on bottem of box. One grommet stayed in place, the other had fallen out. This morning I removed the entire box and immediately saw what was going on.

I am intrigued as to why the PET didn't show/list the part. I wonder if anyone else has found porsche parts on their car that are not in PET....?

The part IS in PET but it is only listed for the 997 series cars.

Chances are they just forgot to refer the old part number in the 996 to the newer part number.

another addition to the Porsche magical mystery tour forum section....

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