Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Damn thing snapped while I was taking it off, no idea what it is and can't quite seem to find out on google for some reason.
It goes from the front valve cover to the intake.
Looks like a crankcase breather to me - just allows air (and oil vapours) in and out of the engine - it goes to the inlet inboard of the filter to prevent the vapours being released into the atmosphere.