PowerFlex Front Lower Tie Bar to Chassis Bushing for BMW. PF5F-501 Application: Front Lower Tie Bar To Chassis Bush (Diagram Reference: 1) Suitable for: BMW E39 5 Series (1996 - 2004) Number of Bushes required per vehicle: 2 Bush Size (if applicable): This bush fits 535, 540 M5 Models, for all other petrol and diesel models use PFF5-510. Bush fits arms with a 66mm bore hole. Important Note: This bush fits 535, 540 M5 Models, for all other petrol and diesel models use PFF5-510. Bush fits arms with a 66mm bore hole. Most orders shipped next business day with UPS or Purolator having 5 to 10 business day shipping and tracking.