Differential Assembly: Specifications

Approved Final Drive Oils for Front and Rear Axle Final Drives
With and Without Limited Slip or Viscous Coupling

All models are factory filled with a synthetic final drive oil.

Limited Slip Differentials
BMW Synthetic Final Drive Oil (SAF-XJ)
(with multi-plate limited-slip differential)

Non Limited Slip Differentials
BMW Synthetic Final Drive Oil (SAF-XO)
(without multi-plate limited-slip differential, or with viscous differential lock [325iX/iXA])