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Looking to replace the corrugated AOS (996.2) line and I noticed (on my other failed motor) that there are two different types of AOS breather tubes. One is all corrugated and the other is a hard line with a 8" corrugated section attaching to the AOS, the attachment point on the right side (head) has a breather.
Which one is better?
On the right you can see the breather that the hard AOS line connects to. Are the connection points the same for either line?
Here's the hard line...
Ignore the red arrows.
I just did mine last month (2004 C4S 996.2). It was the fully corrugated one. I can't say if it's better or worse than the other type, but the one I got from pelican parts was an identical replacement to the one I replaced. Part number was 996 107 147 59
Getting the old line off the AOS and the new one re-installed was a lot easier when I figured out how to twist my body. Instead of using my left arm to reach around the motor, I used my right arm. This means basically rotating your body 90deg, looking toward the left of the car. Then you twist your wrist so your palm is facing backwards and Voila! it was easy to squeeze the end of the AOS line to unlatch or latch it.
Getting the old line off the AOS and the new one re-installed was a lot easier when I figured out how to twist my body. Instead of using my left arm to reach around the motor, I used my right arm. This means basically rotating your body 90deg, looking toward the left of the car. Then you twist your wrist so your palm is facing backwards and Voila! it was easy to squeeze the end of the AOS line to unlatch or latch it.
Ya, it's tight. I replaced my AOS a few months back and should have done the tubing at that time...Live and learn!
I would go with the most recent/highest revision number for your year model as dc states 996 107 147 59. It's not unusual for Porsche to make running changes/revisions to parts and the earlier version can be used untill the supply is depleted, then only the latest revision will be available. Sometimes there are significant changes in appearance or material, sometimes the revised parts look identical. Even a vendor change will get a revision number. I find it best to use the highest revision number when possible.
11-02-2019, 10:54 AM
2 Types of AOS Lines, Who's Replaced thiers?
