Moog RK80711 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower Control Arm for Expedition and Navigator

The Moog RK80711 is a front left lower suspension control arm and ball joint assembly for select Ford and Lincoln SUVs. It is built with a forged aluminum arm, pre-greased components, rubber bushings, and included mounting hardware for a direct replacement on the specified applications.

Key Features

• Fits 2003-2006 Ford Expedition, front left lower
• Fits 2003-2006 Lincoln Navigator, front left lower
• Forged aluminum control arm for structural strength
• Pre-greased assembly for service-ready installation
• Rubber bushings included
• Press-in ball joint with threaded stud type
• Mounting hardware included
• Gray finish with corrosion protection focus
• Moog RK80711 direct replacement part number

Detailed Description

Moog RK80711 is engineered as a suspension control arm and ball joint assembly for the front left lower position on the 2003-2006 Ford Expedition and 2003-2006 Lincoln Navigator. The forged aluminum construction supports the arm’s structural requirements, while the rubber bushings help isolate suspension movement. This assembly is pre-greased and uses a press-in ball joint design with a threaded stud, making it a practical OE-style replacement for worn front suspension components. The Moog RK80711 part number is also referenced in cross-application catalogs for the same vehicle fitment.

This part cross-references Dorman OE Solutions 521-039 for the same application.

What It Helps Address

• Front-end clunking from worn control arm bushings
• Loose or unstable steering feel at the front suspension
• Uneven tire wear caused by suspension wear
• Ball joint play in the front left lower suspension point
• Restoring proper suspension geometry on Expedition and Navigator models

Installation Notes and Tips

Install on the front left lower suspension position only for the listed vehicles. Verify press-fit ball joint seating and torque all fasteners to factory specifications during installation. Because the assembly is pre-greased, no initial greasing is required. Confirm alignment after replacement to restore correct suspension settings on the Ford Expedition or Lincoln Navigator.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection on foreign and domestic nameplates. RK80711 is built to meet OEM standards for the listed applications and is backed by Moog’s OE-focused suspension design approach.