What Is a Control Arm on a Car?

A control arm — also called an A-arm or wishbone — is a hinged link in a car’s suspension that connects the frame or subframe to the wheel assembly.

How Many Control Arms Does a Car Have?

There’s no single number — it depends entirely on the suspension design. Most passenger cars have somewhere between 2 and 4 control arms, but the honest answer is “check your suspension type,” not a universal count.

What Is a Control Arm Bushing?

A control arm bushing is the rubber (sometimes polyurethane) sleeve pressed into the point where a control arm bolts to the car’s frame or subframe.