Cv axles

[FMFReo]

Anyone know if front cv axles from a 2014 550xi can fit with a 2014 750lxi?

[M_Bimmer]

This is actually an interesting question:

The Axle P/Ns are not the same:

1. '14 LCI F10 Left Front Axle: 31607618681 = 606mm shaft (same P/N on the F11/F18/F06/F12/F13 X-drive chassis variants)
   
2. '14 LCI F02 Left Front Axle: 31607606027 = 607mm shaft (same P/N on the F07/F01 X-drive chassis variants)
   
   
3. '14 LCI F10 Right Front Axle: 31607618682 = 906mm shaft (same P/N on the F11/F18/F06/F12/F13 X-drive chassis variants)
   
4. '14 LCI F02 Right Front Axle: 31607606026 = 913mm shaft (same P/N on the F07/F01 X-dive chassis variants)

But assuming everything equal except length...you'd think 1mm difference (607mm vs 606mm) on the left front axle shafts between the two part numbers would be within the tolerance of the CV joint tolerance, plus the shaft/lock-ring engagement to the differential. So these are within "1mm" of being interchangeable.

That difference is 0.27" on the right front axles, which would matter, and that would be too much of a disparity to allow a high confidence of interchangeability. A 906mm shaft length would most likely not lock into the differential that requires a 913mm shaft length, and may not stay locked in when the wheels are turned full left or right. I wouldn't trust interchanging the right front shafts between chassis.