CCV - any difference in part numbers?

[pjs28]

I have a 2006 X5 3.0i - manufacture date = 10/05.

realoem shows the part # for the pressure regulating valve to be "11617533400" for my year.
RealOEM.com - Online BMW Parts Catalog

Prior to 10/2003, the part number would be "11617501566".

There's a huge price difference in complete kits between those 2 parts.

$46 for the kit that fits the earlier X5.
Heavy Duty PCV Crankcase Oil Separator Vent Valve 4 Breather Hose Kit 4 BMW X5 | eBay

$120 for the part that fits my 2006.
BMW Crankcase Oil Separator PCV Vent Valve Hoses Kit Set OEM Quality KM | eBay

Anyone have experience in whether there's actually any difference in those 2 part numbers? They look to be identical to from photos.

Thanks in advance.