Moog RK642800 Suspension Control Arm - Front Right Lower

Moog RK642800 Front Right Lower Control Arm

The Moog RK642800 is a forged steel suspension control arm for the front right lower position on select Cadillac, Buick, and Saab applications. It is built with corrosion protection in mind and includes bushings for a direct replacement on vehicles that call for a premium OE-style control arm.

Key Features

• Forged steel construction for structural strength
• Black finish with corrosion protection focus
• Includes bushings with rubber bushing material
• Non-adjustable design for OE-style replacement
• Front right lower suspension control arm application
• Moog RK642800 replacement for select performance-suspension vehicles

Detailed Description

The Moog RK642800 control arm is engineered for the front right lower suspension position and is used on select Cadillac XTS, Buick Regal, Buick LaCrosse, Saab 9-5, and Buick Allure models with performance-oriented suspension or package-specific fitment. Its forged steel body provides the rigidity expected in a suspension control arm, while the included rubber bushings help restore proper arm mounting and suspension articulation. This part cross-references Mevotech Supreme CMS501126 and CMS501211 for the same application.

Use the Moog RK642800 when replacing a worn front right lower control arm on 2014-2019 Cadillac XTS, 2012-2017 Buick Regal, 2010-2016 Buick LaCrosse, 2010-2011 Saab 9-5, or 2010 Buick Allure applications listed below. The RK642800 is a direct-fit suspension control arm for vehicles equipped with the specified performance suspension or performance package configurations.

What It Helps Address

• Clunking or knocking from the front suspension
• Excessive play from worn control arm bushings
• Uneven steering response caused by suspension wear
• Front-end instability over bumps or during braking
• Alignment issues related to a worn lower control arm

Installation Notes and Tips

Install the RK642800 in the front right lower position only on the listed applications. Verify vehicle trim, suspension package, and brake configuration before ordering, since some fitments exclude heavy duty brakes or require performance suspension or performance package equipment. Because the ball joint is not included, inspect the existing joint and related suspension components during service. A professional alignment is recommended after installation.

Quality Assurance

Moog manufactures premium control arms for foreign and domestic nameplates with an emphasis on structural strength and corrosion protection. The RK642800 is built as an OE-style replacement for the specified applications and is backed by Moog’s product engineering standards.