Powerflex Black Series Car: BMW - xDrive description: Rear Subframe Rear Mounting Insert purchased parts package: 2 installation location: rear notice: Fits diesel cars and all petrol and diesel E91 Touring models. For petrol models, except E91 Touring models, use PFR5-421 inserts or for a complete replacement bush use PFR5-422 Diagram reference: 20 Part no.: PFR5-423BLK