What is this that oil is leaking from?

[loganbmx4gt]

Wondering what exactly this is and what the remedy to stop it is?

 

[dweisel]

That's the vacuum pump. Has a rubber odd shaped o-ring seal.

 

[loganbmx4gt]

http://www.idparts.com/vacuum-pump-seal-a4-alh-p-1199.html

 

[red16vdub]

Usually that is a simple fix.

 

[Victor Huge]

Just don't start the car without the vacuum pump on hehehe... Ohhhh that was a bad day for me