Help identify a diff

[dan101smith]

I've just picked up a diff, but the part numbers listed on it don't tie up with anything on RealOEM.

On it it has printed:

2282191
2229745

If you spin either side of it the other side rotates in the same direction, so that means LSD from memory.

Any ideas what it's from? It was advertised as being from an E46 M3, but that's a different p/n...

[dan101smith]

One end is covered in fins, yes.

Will try and get a pic up.