I have 2 oil leaks.

Strange but the sump plug is leaking, I am changing the oil and filter the weekend so that should sort that, however have noticed this, took the covers off to have a look, it does not feel like wet oil so I am a little confused.
Looking back through the history I noticed it has had what I believe is a breather pipe replaced, the last owner told me it was in this area.
Does anyone know what A06A 103 221 BK fits please and where.
