This is a polyurethane insert that fits into and fills the voids in original bushing to stabilize the diff under acceleration.
This part fits the following models:
F22 2 Series Coupe RWD (2014+)
F22 2 Series Coupe xDrive AWD (2014+)
F30 3-Series RWD (2012+)
F30 3-Series Xi AWD (2012+)
F32 4-Series RWD (2014+)
F32 4-Series Xi AWD (2014+)