996 Air Oil Separator replacement

[996C438]

There is a tiny vent hole in the AOS housing . When going to the UAOS that vent hole has to be sealed . I did mine with the AOS on the bench . There is a small channel where the hole is . I filled that channel with RTV . Unfortunately I don't recall if you can reach that channel if the AOS is installed on the car .

If/when the AOS diaphragm cracks/splits the UAOS just keeps chugging along . The diaphragm being up by the throat body " almost " guarantees that oil will not get sucked into the intake . The reservoir/accumulator included with the UAOS is the final piece of the puzzle keeping oil out of the intake . I recommend the track version as it self drains any accumulated oil back to the crankcase.