Part No for '98 D2 S8 PCV

[peanutmnm]

Hi All,

I've noticed a whistling noise recently which could be transmission related (I hope not!) but is quite high pitched and also sounds like it could be from a vacuum pipe.

After reading this post from Nickid - http://forum.a8parts.co.uk/showthread.php?t=7566 I'm wondering if it might be the PCV?

I'm going to do some further investigation but after looking through a few other posts which offer links to eBay parts I thought I'd see about getting a replacement to see if it helps.

The problem is I can't seem to find anything suitable for a PF 1998 model S8. Everything seems to be for 2000 and later.

Would anyone happen to know what the part number is for this particular engine?

Many Thanks