They are. In my case, I had to purchase preface 4.4 rear axels. Since my '05 3.0 6M axels didn't mate with the pre face lift 4.4 output flanges and I couldn't just swap em out. The 4.10 manual cars are different from the 4.10 auto differential. The manual diff is bigger and seemed tougher (even more so than the V8 diff).The auto diff however, May be a direct swap and might be better for you. The front diffs interchanged perfectly. Output splines and hubs are the same post-'2000 across the board . Double check my info, as I'm going off the 4.4./3.0.

I have my Manual 4.10 rear and the oem rear axels (which will fit yours as a direct fit as a combo) which are in good shape up for grabs. If interested, pm me.

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2005 X5 3.0, 6MT, Alpine White on Truffle Brown, Sport, Preim, and Cold Weather, Alpina Stainless Headers, AFe Intake, UUC SSK, OEM 87's, 3.64 Differential Swap,Performance Modified Euro 2 Tune, UUC LTW Flywheel and HD clutch, Bilstein B12 Suspension kit
Future mods ZHP/Schrick Cam Shaft upgrade, Operation code name:Doppelschrauben-Kompressor

Wife's Ride: 2011 e70 X5 351 M///Sport.

Also in the fold: 2004 X3 3.0, 6MT, Black Sapphire on Terracotta, port, Premium, Cold Weather.