Whats This Pipe ?

[MarcB]

I have stole the picture from **SHOW US YOUR ENGINE BAY ** in the media section but im wondering what this pipe is with the red arrows pointing at it ?

I notice that in the picture below the owner has managed to get a silicon one.

 

[Carbonraider]

Aircon pipe with a sleeve on..

 

[Djw John]

Yup

 

[Dave..]

...and heavily photoshopped.