King pins, the bushings that encircle them, and their related components are essential for proper steering. They connect the steer axle to the steering knuckle, supporting the steering geometry and allowing the wheel ends to turn the vehicle.

What is the function of kingpin?

The kingpin (also king-pin, king pin and k pin) is the main pivot in the steering mechanism of a car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus for a semi and its trailer or other load.

How can you tell if kingpin is bad?

Signs of king pin wear or damage include uneven front tire wear, incorrect vehicle alignment, and a pull in the steering.