Moog RK80404 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower Control Arm Assembly

Moog RK80404 is a front left lower suspension control arm and ball joint assembly for select Ford F-150 and Lincoln Mark LT applications. It is built with forged aluminum for structural strength and corrosion protection, and it comes pre-greased with a grease fitting for serviceability.

Compatible with 2004 Ford F-150, front left lower; 2005-2008 Ford F-150, front left lower; and 2006-2008 Lincoln Mark LT, front left lower. This Moog control arm assembly is a direct-fit suspension service part for vehicles with a 6 stud rotor and premium OE replacement requirements.

Key Features

• Forged aluminum control arm construction
• Pre-greased for initial installation
• Grease fitting included for future maintenance
• Bushings included with rubber bushing material
• Press-in ball joint mounting type with threaded stud
• Mounting hardware included
• Gray finish for corrosion protection
• Non-adjustable design

Detailed Product Overview

Moog RK80404 is engineered for the front left lower position on the Ford F-150 and Lincoln Mark LT. The assembly includes bushings and a press-in ball joint, helping restore suspension geometry and steering response when the original control arm shows wear. Moog RK80404 is a practical OE-style replacement for trucks that need a durable lower control arm assembly with serviceable grease access.

This part cross-references Dorman OE Solutions 520-391 for the same application. It also cross-references Moog RK80404-style interchange references commonly used for the same front left lower suspension service on Ford F-150 and Lincoln Mark LT models.

Common Problems This Part Can Address

• Clunking or knocking from the front suspension
• Excessive play in the lower control arm or ball joint area
• Uneven tire wear caused by worn suspension components
• Loose or imprecise steering feel
• Corrosion-related replacement of the original control arm assembly

Installation Notes and Tips

Install RK80404 in the front left lower position only on the listed applications. Verify 6 stud rotor configuration and confirm VIN details for the 2004 Ford F-150 before ordering. Because this assembly uses a press-in ball joint, proper suspension tools and alignment service are recommended after installation. Always inspect adjacent bushings, tie rod ends, and related front-end components during repair.

Quality Assurance

Moog premium control arms for foreign and domestic nameplates are engineered with structural strength and corrosion protection in mind. RK80404 follows that approach with forged aluminum construction, included bushings, and serviceable grease access for routine maintenance.