Tie rod end right (Part 90003919) is a key component in the steering linkage of terminal tractors and yard trucks. Tie rod ends connect the steering linkage to the steering knuckle, translating steering gear motion into wheel movement. The tie rod end mounts at the right front steering knuckle and bolts to the steering linkage. When the steering wheel is turned, forces from the steering gear travel through the draglink and on into the tie rods. The tie rod end’s ball joint allows controlled pivoting so the wheel kingpin axis turns smoothly without binding, enabling precise steering and predictable control.