OK I figured it out.
Where the flange sits at the bottom of the stem it has a chamfer cut into it where the "O" ring site.
Now that makes sense..
Cheers!
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My Beast 2004 Boxster SE #0174
- 3.8 with all the internal goodies, Under-mount Pulley, IPD Plenum, 996 Intake, Softronic Tune, 987 Factory Sport Exhaust, skid plates, IMS solution, Ohlins R&T, RSS Toe Links, Camber Plates, Michelin Pilot Super Sport on all 4 corners, Alpine Double Din c/w new speakers & amps.
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