I'm not sure on the BMW parts as the M62TU engine in some of the BMWs have a cyclone behind the timing covers which may be instead of the one for the PCV at the rear but looking at real oem link below it all looks the same
I have been using Febi Bilstein parts recently and find them very good, link below, as they sell the BMW and landrover parts.

http://www.febi-parts.com/?lang=GB

They do list a pcv valve which is on ebay and amazon as the x5 and range rover m62. The 45194 is the febi number.

https://www.ebay.co.uk/itm/Air-Intake-Cont...Sw9KhZ-v4U

You can search bmw part numbers here

https://www.realoem.com/bmw/enUS/partgrp?i...&sg=25

https://www.realoem.com/bmw/enUS/showparts...Id=11_2817

https://www.realoem.com/bmw/enUS/showparts...Id=11_2281

Britcar is also a site for landrover parts as they also show alternatives but i only really go for the OEM quality equivalents

Make sure the part numbers are correct as i have just done a very quick google but the Febi site is normally reliable

Thoughts on these? eBay item eBay Item No. 152342226526 Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Also the metal looking pipe that goes into the sump with a banjo bolt - does this need replacing or cleaning it is twice the price of the pcv! Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

They look alright, i have red cam covers so i cant talk !
The two going to the sump just need cleaning, the tiny little wiggly worm looking one will have the end of the pcv valve snapped off in it probably but shouldn't need replacing but is a fecker to fit back on the pcv, i extended mine and i also had the inlet manifold off. it is such a small diameter i cant see much getting down it anyway.
From Ant's instruction i think getting yourself something comfortable to lie on will help massively

It's easier if you pop your inlet manifold off ....

Ok my buddy is just finishing building his house so he said it will be a month or so. In order to preven the random eml thinking I will just change the hoses for now well the top ones for certain as they’ve split. Is there any way to do the small one with pcv in place or are you saying it will snap? How would you clean the drain hose? Massive pipe cleaner? Does this need to come off for cleaning or could I leave it in place and disconnect at the sump? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

The pipe wont snap but the plastic end on the PCV valve will most likely snap off in the end of the little pipe and then you can just remove it. If you are just going to do the pipes and not the valve then you wont need to disconnect the small one.
The main pipe going to the sump comes from the cyclone and the smaller one next to it comes from the small pipe mentioned above.
You can disconnect if from the sump to make sure liquid is getting through like a spray of WD40 and a puff of compressed air just make sure it is clear before connecting back up to the sump

Can I do the otherway take the lid off the cyclone(can you?) and blow compressed air down?
Also the hose that goes from rocker to cyclone looks ok to change but how hard is the one to access the pcv end of cyclone to pcv? 5 Minute job if I’m in there anyway for the other hose or more? Cheers Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

If you go back to Saints how to it shows you the pipes to change, you are only changing the two big pipes shown in saints photos ( the blue ones on the attached) and the PCV Valve if you do that at the same time.

i have attached an updated version of the sketch i posted with some notes on.

The two main pipes are not difficult to change, the PCV is the tricky bit. Just be careful if using compressed air to check for blockages as if you blow apart the joint at the bottom of the cyclone or where the little pipe shown in orange connects to the metal part they are harder to access. i would squirt some carb cleaner or wd40 into the top of the cyclone and then block one of the holes and blown in the other with the pipe disconnected from the sump until nothing nasty comes out.
if you are not doing the PCV at the same time then you dont have to touch the small orange pipe.

Click image to enlarge

does the cyclone come apart easy so i can spray in it? is there a problem not disconnecting it from the sump and blowing the crap into the sump the doing an oil change a bit later? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

I don't think the cyclone comes apart but i may be wrong. It is only one bolt to take the pipe off the sump but i cant remember is it above the oil level or not.
It is your call really, the cyclone will most likely have emulsified oil in it and whatever you spray into as well which will all end up in the sump, I wouldn't if it was mine but there probably isnt any hard bits of crap to block oil ways or the pick up screen and would probably just be diluted into the oil but if it was me i wouldn't do it.
You could always drain your oil and put it back in I guess if the connection is below the oil level...
You can disconnect the cyclone at the bottom pipe but it is tricky to get to.
You could compare notes with this guy as he is about to do just that

http://www.fullfatrr.com/forum/topic46004.html

ok great does the bottom little pipe go bad? just don't want to blow into it and it disintegrates  Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

How much pressure does the system generate? Basically did the top hoses but they are so fat I can only get one jubilee clip on. They are very tight. I gave it the beans and didn’t move at all.

I then tackled reseating the gasket only trouble was it seemed seated fine.

I then noticed all 8 of the rocker cover bolt rubber washers have all cracked and not compressed at all and are very brittle. I got them from Dan on here but they are so hard they are more like plastic. I’m thinking if they were more rubbery the squeeze out the sides a bit and put less pressure on the gasket. As it is they are all cracked after one week! Also as they won’t take any pressure that’s tighter on the rocker gaskets making them spill out... what do you think

Does this look like bad pcv?

Theres no excessive sucking but I don't know if theres any at all? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Bump on the dipstick / vacuum question - if I have very little / no vacuum is that good or bad! Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

Sorry, I stopped getting notifications on this thread.
The cam cover washer seals all need to be soft to seal correctly and can’t remember if you did your cam cover gasket but these need changing at the same time, the metal insert stops excessive squashing of the seals . If these don’t seal you will lose your vacuum created by your pcv.
You should see a definite suck on a rubber glove placed over the dipstick tube , I rigged up a manometer in one of the threads to show how much vacuum is required, might even be earlier in this one .
If it’s not sucking you either have leaks in the pcv pipework , cam covers or a bad pcv valve which needs to be addressed ideally