A Word About Steering Components
Each steering linkage component has its respective purpose. However, did you know the idler arm not only "carries" the linkage, but also helps the linkage return to the center after turning a corner? How does it do that? By having a stiff rubber/steel bushing that keeps the idler arm and steering linkage centered. Factory idler arms have pressed-in rubber/steel bushings that are stiff by design, leading some to believe there's something wrong with them because they are stiff. The stiff rubber/steel pivot bushing is there to make the steering wheel snap back to center as long as you have a spot-on front-end alignment with proper toe. Ironically, most aftermarket idler arms have a bushing design that makes the idler arm roll smoothly about its axis. It makes steering smoother from lock to lock but defeats what Ford engineers had in mind 45 years ago. The best idler arm for your classic Mustang isn't mainstream aftermarket, but rather exactly what Ford installed to begin with-that stiff, rubber-bushed idler arm.