Moog RK621457 Suspension Control Arm and Ball Joint Assembly - Rear Right Upper

OE-Style Rear Upper Control Arm

The Moog RK621457 is a rear right upper suspension control arm and ball joint assembly built for the 2009-2012 Ford Escape and 2009-2011 Mercury Mariner. It is engineered with stamped steel construction and corrosion protection to support structural strength in everyday driving.

Pre-greased and supplied with rubber bushings, this assembly is made for direct replacement service on the rear suspension. The press-in ball joint design with a threaded stud follows OE-style service requirements for the Ford Escape and Mercury Mariner rear right upper position.

Key Features

• Fits 2009-2012 Ford Escape, rear right upper
• Fits 2009-2011 Mercury Mariner, rear right upper
• Moog RK621457 suspension control arm and ball joint assembly
• Stamped steel control arm with black finish
• Pre-greased for initial service readiness
• Rubber bushings included
• Press-in ball joint with threaded stud
• Mounting hardware included
• Non-adjustable OE replacement design

Detailed Description

Moog RK621457 is a rear right upper control arm assembly for Ford Escape and Mercury Mariner applications. Moog builds premium control arms for foreign and domestic nameplates with an emphasis on structural integrity and corrosion resistance, and this assembly follows that approach with stamped steel construction, rubber bushings, and a pre-greased ball joint. The RK621457 is a direct-fit suspension component for restoring rear suspension geometry on the 2009-2012 Ford Escape and 2009-2011 Mercury Mariner.

This part cross-references Dorman OE Solutions 521-960 for the same application. It also cross-references Mevotech Supreme CMS40157 for the same application. Search terms such as rear right upper control arm for Ford Escape, Mercury Mariner rear suspension control arm, and Moog RK621457 OE replacement help identify the correct part quickly.

What It Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from the rear upper suspension area
• Uneven rear tire wear caused by worn control arm bushings or ball joint wear
• Excessive play in the rear right upper suspension link
• Restoration of factory-style rear suspension alignment points

Installation Notes and Tips

Install RK621457 at the rear right upper position only on the listed Ford Escape and Mercury Mariner applications. Verify the press-in ball joint and threaded stud interface before installation, and inspect adjacent rear suspension components for wear that could affect alignment or ride quality. Because this assembly is non-adjustable, final alignment should be checked after installation.

Quality Assurance

Moog positions this control arm line for structural strength and corrosion protection on foreign and domestic applications. The RK621457 is built as an OE-style replacement for the specified Ford Escape and Mercury Mariner fitments.