What is this part please?

[jimmym105]

Hello all

When checking my oil I noticed this broken pipe and blamed it for a bad smell coming into the cabin. Had the car in to have an earth point sorted and asked them to rectify. They said they couldn't source the part so glued it and didn't charge me. The glue didn't last long - it melted -  and it's cracked again. I've sourced a second hand part and want to replace bit, but can someone tell me what it is so I can find some instructions please?! E.g. is it pressurised or will a liquid come out. 

It's a B204L engine. Thanks in advance!

[Audax]

Breather nipple. http://www.ebay.co.uk/itm/Saab-9-3-900-Cam-Cover-Breather-Union-Nipple-NEW-Genuine-30551957-/401273864127

[jimmym105]

Excellent, will get a rubber washer and fit. Cheers