https://www.realoem.com/bmw/enUS/showparts?id=WX53-USA-03-2011-F25-BMW-X3_28iX&diagId=31_0890FWIW this is what I used on my BMW a long time ago and it worked fine. I’ve never seen a factory manual list different products for the two joints.
https://www.autohausaz.com/pn/2003
for my 2011 x3, 2 different greases are used.
inner boot uses 83232179708
Grease 'One Lube Improved'.(Grease for Tripod Joints- (One-Luber GKN C improved). With Phosphoric Acid Esters, Amine Salt.(110 g. Tube).
outer boot uses 83190447919
Lubricat.mat.Optitemp 2, which is