This tie rod end connects the steering linkage to the front axle knuckle, translating rotational input from the steering gear into a linear force that turns the wheels. It is the pivot point at the outer end of the drag link, where the threaded stud seats into a tapered hole in the steering arm. A worn tie rod end introduces free play in the steering system, causing wandering, uneven tire wear, and delayed response to steering wheel input. The manufacturer machines the ball stud and socket to the same tolerances as the original assembly, so the preload and pivot range match the host tractor's steering geometry without requiring shims or adapters. On installation, torque the castellated nut to specification and install a new cotter pin.