Powerflex Black Series Car: BMW - 520 to 530 Touring description: Front Lower Tie Bar To Chassis Bush purchased parts package: 2 installation location: front notice: PFF5-510 is fitted on all petrol and diesel models except 535 to 540 and M5 which use PFF5-501. - Bush fits arms with a 59mm bore hole. - BMW Ref 31129068753 Diagram reference: 1 Part no.: PFF5-510BLK