I had this on my 4.6. The repair was intensive but straight forward. I bought a new oil pick up pipe to be safe asi was not confident the old one could be cleared internally of all the plastic. Resetting the timing was also straightforward once we understood how top do it

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'11 xDrive40d M Sport - 4-zone climate - Active cruise control - top view - side view - massaging/heated/ventilated seats - Powered bootlid - Comfort Access - BMW Advanced loudspeaker system - Rear side windows sunblinds - Adaptive headlights - Soft close doors - comfort seats - DAB digital radio - Panoramic glass sunroof - folding mirrors - High beam assistant - Head up display - Speed limit display - Lane departure warning system - 7 Seats - Digital TV - Internter - apps - USB