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Man, you had me on the floor laughing.... I liked your story as I have been there so many times..... The car ran fine before I decided to help it! Having to disassemble the whole damn thing again, after doing maintenance as it no longer runs right......... Then discover you need the hands of a child with gorilla like strength to reach that one god damn thing that should just come out by hitting the thing with a hammer POW! Lol... Okay ragging with the hammer doesn't make it better.. usually.
Yeah the plastic parts in the engine bay of an X5M become fragile, and heat and time make them brittle little pieces of... I've replaced both crankcase vent lines, cross over pipe, filtered air ducts, etc.... There doesn't seem to be an off the shelf after market solution for these parts. They will fail again.
Heat is the enemy of engine bay plastics, wrapping them in some sort of radiant barrier probably would help some. But it would hide of course the problem when they / will crap out.
Reducing under hood temps could help, but there is no way to know if say a turbo blanket would reduce the local hot spots the CCV lines go through. But damn they sure dont hold up. I'm on my 3rd set on my 2011. Climate seems to be a factor as well, if you live some place hot the plastic parts death is accelerated.
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