Auxilary seal

i have a oil leak from my engine block . my brother who is a mechanic says it is coming from the auxilary seal where the auxilary pulley is located. is this the name for that seal or is there a specific name because vw havent heard of that seal and if it is the right name where can i get it from?????? if some one with someone with some valuable knowledge could help me that would be great.
thanks.

Its probably the intermediate shaft. The one that drives the distributor.

do i ned to replace a seal and is it a n auxillary seal, if not what part needs changing

Im shure its the same seal as the camshaft
Bert