Glad you have some parts sources lined up. I used both of those, myself. Good luck with your repairs. Don't wait too long to do a compression test just in case you have blown a head gasket...

Either failing CCV or a frozen-solid CCV can allow pressure to build under the valve cover, which would help blow out or un-seat an old valve cover gasket. So, I would say they are related. But, hard to say what is cause and effect here.

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David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles