Quote:
Originally Posted by jdrex
Just wanted everyone to be aware that the aftermarket replacement parts are defective. The original part has a breather hole next to the one way flapper. This breather hole is missing on the aftermarket parts sold everywhere. Please see image of the original part I uploaded here....
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Curious about this comment. I did a tear down on my old s63 valves and noticed that while the drivers side closed tight and let no air thru at all, the useless passenger side valve seemed to close and seal completely but still let a ton of air thru when it was closed. Is that because the passenger side valve has the breather hole and the driver's side doesn't? Or is my passenger side valve defective?
If it's intended, why would they put a breather valve and one side and not the other?
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