How a car works

All partsBMW M4 CSLSuspension & steering › Ball joints

Ball joints

Part of Suspension & steering · about $480 to replace

What it is

Sealed ball joints at each arm-to-knuckle link.

What it does

Allow the hub to steer and travel while staying located.

How it fails

Clunk over small bumps; the boot goes first.

MaterialHardened steel ball, POM socket
Spec8 joints
25 mm ball
Ball joints highlighted on the car

Inside this part

Nearby