Expedition. Navigator. Arm connected between the axle and a forward pivot point. Includes: Bushing. Part has related components that cannot be reused/reinstalled; adjust bolt, nut and mount bolt. Part has related components that cannot be reused/reinstalled; front bolt and lock nut. Suspension component that connects and provides pivotal movement of the Steering Knuckle to the vehicle. Trailing. Assembly -. Link. Lower Control. Tension rod. Track Bar.