I got mine from opelgtsource.com I think it was ~$10. Looks like a pretty standard vacuum check valve with a (1/4"?) tubing connector on either end. I wouldn't be shocked if you could turn one up in a Pep Boys/Advanced/etc.Originally Posted by rockytopmark
Ron in Indy


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The brake booster hose connects to the intake manifold . The hose at the valve cover is the vent for the crankcase gasses and goes to the air cleaner.HTH


123 WHP @ 6800 RPM 
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