My service adviser notified me that the leak was coming from both the drive shaft and wheel axle connection points to the differential. This is a bit worrying to me... but hoping the fix does the job. If they're replacing a defective part for the same part, it stands to reason the part will fail again? One of the parts is labeled "repair kit", so perhaps there's a known issue and this is meant to repair it. I will be looking for fresh fluid on my garage floor in the future but will be driving her easy for a while just in case the replacement parts need time to settle in. As others have stated, I only ever notice drops on my floor after spirited driving.
Here's the bill of materials for the work performed:
3 - 83-22-2-447-362 - HYPOID AXLE BMMI
1 - 83-19-0-404-517 - LOCTITE 5970 01BCMB
1 - 33-11-7-525-064 - SCREW PLUG W BMBIMI
2 - 33-10-7-568-368 - GASKET SET D BMRRSA
1 - 33-12-7-607-158 - REPAIR KIT I BMMIRR
Links to the main mechanical parts in the BOM.
https://www.bmwpartsdeal.com/parts/b...127607158.html
https://www.bmwpartsdeal.com/parts/b...117525064.html
https://www.bmwpartsdeal.com/parts/b...107568368.html