Will 535 Diff fit my 540?

[zman-95-540i]

Thinking about a 3.91 LSD but I'm not sure if it will fit.

Thanks.

[Cereal Killa]

They will not fit. 535 is a medium case diff while the 540 is a large case.

[zman-95-540i]

Thanks. Not the answer I wanted but I appreciate the info.

[uginer]

It wont fit, you 540 prob uses the 3.1

[Jon K]

Yeah BMW used large case diffs on 540s because theyre so damned fast :P

[Paul in NZ]

and m5s