Between Rad and FMIC...?

prob a silly question, but can anyone let me know what that blue thing on the right between the rad and fmic is? Ive seen it on a few cars in the garages cant figure it out...

engine001.jpg
 
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probaly another silly question but see the short blue pipe coming out of the left side of the rocker cover and connecting to a silver pipe, whats it for??
 
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