Dorman 524-215 Suspension Control Arm - Rear Left Upper

Dorman 524-215 Rear Left Upper Control Arm

Dorman 524-215 is a suspension control arm for select Buick, Saab, and Buick applications with 4-link rear suspension. It is built as a steel replacement arm with a painted black finish and rubber bushings to match the original mounting style on the listed vehicles.

Key Features

• Steel construction with casting/forged design for OE-style strength
• Painted black finish for corrosion resistance and a clean undercar appearance
• Rubber bushing included with black bushing color
• Welded ball joint mounting type with threaded ball joint stud type
• Direct replacement for the rear left upper position on listed applications
• Precision-engineered and tested for reliable OE replacement performance

Detailed Description

This Dorman suspension control arm, part number 524-215, is made for the rear left upper location on 2010-2012 Buick LaCrosse with RPO Code GNC 4-link rear suspension, 2011-2012 Buick Regal with RPO Code GNC 4-link rear suspension, 2010 Buick Allure with RPO Code GNC 4-link rear suspension, and 2010-2011 Saab 9-5 with 4-link rear suspension. The steel body, welded ball joint mounting point, and rubber bushing design support a factory-style suspension layout where the original arm has worn, bent, or developed excess play. This part cross-references Mevotech Supreme CMS501170 for the same application.

Common Problems This Part Can Address

• Rear suspension clunking from worn control arm bushings
• Loose or unstable rear-end feel during braking or cornering
• Uneven tire wear caused by suspension arm movement
• Noise from a damaged or fatigued rear upper control arm
• Restoring proper rear suspension geometry after component wear

Installation Notes and Tips

Verify the vehicle’s rear suspension configuration before ordering, especially the RPO Code GNC 4-link rear suspension on Buick models. This arm is not adjustable and does not include a ball joint, mounting hardware, grease fitting, or mounting brackets. Because the ball joint is not installed, confirm the correct service procedure and inspect related suspension components before installation.

Quality Assurance

Dorman states this control arm is precision-engineered and rigorously tested to provide a reliable replacement for the original equipment on the specified vehicles. Part number 524-215 is built to meet the needs of OE-style suspension service on the listed Buick and Saab applications.