Moog RK621455 Suspension Control Arm and Ball Joint Assembly - Rear Right Lower

OE-Style Rear Right Lower Control Arm

Moog RK621455 is a suspension control arm and ball joint assembly for the rear right lower position on select Ford Escape and Mercury Mariner models. It is built with stamped steel construction, rubber bushings, and a pre-greased ball joint for direct replacement service.

Compatible with 2009-2012 Ford Escape, rear right lower, and 2009-2011 Mercury Mariner, rear right lower. This Moog RK621455 assembly is engineered for structural strength and corrosion protection in a replacement suspension application.

Key Features

• Stamped steel control arm with black finish
• Pre-greased ball joint for service-ready installation
• Press-in ball joint mounting type with threaded stud
• Rubber bushings included for suspension isolation
• Mounting hardware included
• Non-adjustable design for OE-style replacement
• Moog RK621455 part number for easy identification

Detailed Product Overview

This suspension control arm and ball joint assembly is built for the rear right lower position on the Ford Escape and Mercury Mariner applications listed above. The stamped steel arm provides a rigid foundation, while the rubber bushings help maintain proper suspension articulation and reduce harshness. The pre-greased ball joint and included hardware support a straightforward replacement process, and the press-in ball joint design follows the original-style service layout. If you are replacing worn rear suspension components on a 2009-2012 Ford Escape or 2009-2011 Mercury Mariner, RK621455 offers a direct-fit solution for the specified position. This part cross-references Dorman OE Solutions 522-320 for the same application.

Common Problems This Part Can Address

• Rear suspension looseness or clunking from worn control arm bushings
• Excessive play from a worn ball joint assembly
• Uneven rear tire wear related to suspension wear
• Noise over bumps from deteriorated rear lower suspension components
• Loss of stable rear suspension geometry at the rear right lower position

Installation Notes and Tips

Verify vehicle year, make, model, and rear right lower position before installation. Because this assembly uses a press-in ball joint design, proper suspension service tools and alignment procedures are recommended after replacement. Inspect adjacent rear suspension components for wear before reassembly to avoid repeat repairs. Confirm fitment for 2009-2012 Ford Escape and 2009-2011 Mercury Mariner applications before ordering.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection, with OE-style replacement fitment for the listed Ford Escape and Mercury Mariner applications. Part number RK621455 is built to meet the demands of suspension service in the rear right lower position.