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What Part is This?

Old Aug 17, 2009 | 08:28 PM
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Default What Part is This?

I have this part located at the rear of the engine (1993 4.3l Jimmy) on a vacuum line (see circle on pic) but I do not know what it is or what it does. There is a similar part located off of the EVAP under the oil filter. I am assuming that they are valves of some kind but I can't find anything about them. Can anyone help me out?
 
Attached Thumbnails What Part is This?-part.jpg  
Old Aug 17, 2009 | 08:34 PM
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looks like a breather valve
 
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