Moog RK642799 Suspension Control Arm - Front Left Lower

OE-Style Front Left Lower Control Arm

The Moog RK642799 is a front left lower suspension control arm built for select Buick, Cadillac, and Saab applications with performance or premium OE replacement requirements. It uses forged steel construction, rubber bushings, and a corrosion-resistant black finish to support stable suspension geometry and long-term durability.

Fits 2012-2017 Buick Regal, front left lower; fits 2014-2017 Cadillac XTS, front left lower; fits 2010-2016 Buick LaCrosse, front left lower; fits 2013 Cadillac XTS, front left lower; fits 2010-2011 Saab 9-5, front left lower; fits 2010 Buick Allure, front left lower.

Key Features

• Forged steel construction for structural strength
• Black corrosion-protected finish
• Rubber bushings included for suspension isolation
• No grease fitting for a sealed-style design
• No ball joint included
• Non-adjustable OE replacement layout
• Front left lower position

Detailed Product Overview

Moog RK642799 is engineered as a premium control arm replacement for foreign and domestic nameplates. The forged steel arm measures 11.896 inches in length and is built with bushings already installed to help restore proper suspension movement and alignment control. This part cross-references GM OE numbers such as 13332175 and 22905355 for the same application. The RK642799 is a direct-fit choice for drivers searching for a front left lower control arm for Buick Regal, Buick LaCrosse, Cadillac XTS, Saab 9-5, or Buick Allure models with the listed performance or premium suspension packages.

Common Problems This Part Can Address

• Excessive play or looseness in the front suspension
• Clunking or knocking from a worn lower control arm
• Uneven tire wear caused by suspension geometry issues
• Steering wander or reduced front-end stability
• Cracked or deteriorated control arm bushings

Installation Notes and Tips

Verify the vehicle’s suspension package, brake package, and position before ordering, since fitment is specific to front left lower applications and certain performance or premium OE replacement configurations. Because the ball joint is not included, confirm whether the existing joint is serviceable or whether additional replacement parts are needed during the repair. After installation, a professional wheel alignment is recommended to restore correct suspension angles.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection, with materials and bushing design selected to support dependable suspension service. Part number RK642799 is built to OE-style standards for the listed applications and fitment requirements.