530iA Differential 525i Differences`?

[525iBMW]

Would like to know if there are any major differences in the 530iA and a 525i manual differentials? I was told the ratio is different 3.15 vs. 3.23 and that the input flange is different which can be swapped because spline is identical. Please verify... ;)

Just checking...

[632 Regal]

yep, have to swap the flanges, splines are the same.

[525iBMW]

yep, have to swap the flanges, splines are the same.


All flanges or just the input shaft?

[632 Regal]

good question, I'm pretty sure on the input. The output is questionable but they pop right out, not like the input thats needs to be tightened and loc-tited. You should be able to check the part numbers on the ETK and compare them.