**Connects the rear ball joint to the lower swing arm, fits rear left and rear right applications** Your BMW's rear integral link is an important part of the rear suspension. With age and high mileage the rear integral link can develop play which can cause several issues with alignment and performance. If your rear end is squeaking when you get in and out of the car, you experience a looseness in the rear while making a lane change, or your rear tires are "cupping" we recommend that you inspect and replace the rear ball joint and integral link as needed. We also recommend that they are done together to save time on repairs later.