[Polo08816]

Originally Posted by ThomasR

Not so. You had me worried there Polo. I just checked BMW TIS.

Rear: BMW Synthetics OSP 83 22 9 407 768
https://www.newtis.info/tisv2/a/en/f...th-lid/1EFiDSn

and
Front: BMW Synthetics OSP 83 22 9 407 768
https://www.newtis.info/tisv2/a/en/f...ential/1Tb0rtF

I read the same links, but I read the information differently.

I think the discrepancy is the front, not the rear.

If you have a E53 or E83 without an N46 engine, you should use a Hypoid Axle Oil G1 which includes the part number for BMW Synthetics OSP 83 22 9 407 768. However, since that isn't the case for an F25, it falls under "All model series and E83 with N46 engine" which is a Hyoid Axle Oil G2 part number 83 22 2 413 511.