On a vehicle with rack and pinion style steering, there is an inner tie rod end at each end of the steering rack. When the driver turns the steering wheel, the steering rack either pushes or pulls the front wheels. The inner tie rod end provides pivot points for the steering gear and transfers the movements of the steering wheel to the wheels.
To replace the inner tie rod end, the wheel is removed and the outer tie rod end is removed from the steering knuckle. Then the steering rack boot is removed, and the inner tie rod end is removed and replaced. Finally, the vehicle's wheel alignment is adjusted to the manufacturer's specification to ensure proper tire wear and steering characteristics.