Holy cow...Porsche tax!
That valve is over $100 (as high as $185). No thanks.
I think I'll just use one without the "Porsche" part #.
Here's the Porsche part ($110-$185):
And the Mercedes part ($45):
And another Mercedes part ($34):
I think I'll go with option #3 and either use a 90 degree fitting for the vacuum line or just loosen and turn the cap.
