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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
they are vacuum lines for the emissions stuff, just make sure you plug off the ones that break off, or you could replace them with thin vacuum hoses, but if you dont have a smog pump then you can just plug them.
I deleted my egr, and all emissions stuff, so I just took out all the air valves and sensors and now it is really clean looking.
Ii will be getting a digital camera soon to take some pics.
if you are asking what the whole thing is rubber spliter and plastic vaccum lines to buy a replacement sry to say you cant, i looked before, but you might find one in a junkyard.
vacuum lines which is part of the smog pump. i would just remove the pump and everything with it. but if u do be sure to plug the holes in the back of the heads.