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Discussion Starter #1 (Edited)
Although I don't have a e39 anymore, thought to bring up an alternative for the PIA M54 CCV
An elegant solution would be to retrofit the sulev valve cover from the M56 engine. The valve cover is aluminum, has apparently a N62 CCV valve, but the cover has to be removed to access it. There is only one hose that goes out from the top of the valve cover and attaches to the intake manifold, meaning, you either take a sulev manifold (I wouldn't because the M56 is for a 325 car, so I think it's more restrictive) or one would just cap off the original intake manifold where the other original CCV hoses get attached to it. Also, I wouldn't bother with a new dipstick, just cap off the original CCV connection. Here is a detailed post on e46 fanatics. Be sure you read to the very end, where I posted a few tidbits.

Here is how that valve cover looks with the only 1 hose attached to the intake manifold. You can see where the CCV valve is lodged on the top - the black round plastic cap:

 

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Will be adding this too my engine in the next few weeks. The working grommet that is under the plastic lid, can be purchased on Ebay now and there is a Russian company that sells the part. Cost about 30 bucks delivered, and takes about 4 weeks to arrive. That's the last piece of the puzzle that I am waiting on. Bought the valve cover and the dipstick , while at a pick and pull near by. Got the valve cover , 6 brand new coil packs (they sure looked new) and the dipstick ,,for 40 bucks. The valve cover is over 400 bucks today
 

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Please share your Russian parts info when possible. The regulator part is not N62. Looks similar but not the same...

Will be adding this too my engine in the next few weeks. The working grommet that is under the plastic lid, can be purchased on Ebay now and there is a Russian company that sells the part. Cost about 30 bucks delivered, and takes about 4 weeks to arrive. That's the last piece of the puzzle that I am waiting on. Bought the valve cover and the dipstick , while at a pick and pull near by. Got the valve cover , 6 brand new coil packs (they sure looked new) and the dipstick ,,for 40 bucks. The valve cover is over 400 bucks today
 
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