Posted by Milo/ in/ Pa [71.116.29.166] on Tuesday, March 09, 2010 at 11:06:38 :
In Reply to: ot - Durango brake booster question posted by AAA [216.177.165.76] on Tuesday, March 09, 2010 at 10:06:39 :
Yes that is a vacuum check valve it holds the vacuum that is stored inside the booster