It's a liquid filled mount that uses magnetized fluid. The mount is electromagnetic and the DME actually stiffens the mount as load increases (sort of like manga-ride shocks). That way at idle, and cruise, you have a very pliable rubber mount that gives great NVH but when you are really pushing the car you have an extremely rigid stiff mount that gives better performance.
@doublespaces can explain more I think
Pretty sure it just that the ones with the logo grounded off out of stock so stuck actually buying bmw brand they look identical to the 034 ones that i bought and am hoping the bottom doesnt fall off ofP/N: 22116793240
Anyone know what is special about it? Aside from the fact that BMW charges $600 for it?