I ran into the same issue but I was able to reseat the pipe using my iPhone as a crude scope to see down there while working. The pictures also helped confirm positioning. So far so go no leaks. As others have said it's a o-ring so it can rotate. Hope that helps out

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2013 X5 xDrive3.5i Premium
2002 530I Sport Package
2001 X5 4.4i
2001 M3