Dorman 521-920 Suspension Control Arm - Front Right Lower

Durable Suspension Control Arm for Buick, Cadillac, Oldsmobile, and Pontiac

The Dorman 521-920 suspension control arm is engineered to restore proper suspension geometry and improve vehicle handling for select Buick, Cadillac, Oldsmobile, and Pontiac models. Constructed from coated steel with a boxed design, this control arm offers reliable strength and durability for your vehicle's suspension system.

• Made from high-strength steel with a coated finish for corrosion resistance
• Boxed construction enhances rigidity and durability
• Includes a black rubber bushing with a 14.3 mm inside diameter and 39.6 mm outside diameter
• Overall length of 262.5 mm for precise fitment
• Welded ball joint mounting type with threaded ball joint stud (ball joint not included)
• Compatible with multiple Buick, Cadillac, Oldsmobile, and Pontiac models

Technical Details and Construction

This suspension control arm features a boxed steel construction that provides enhanced strength compared to stamped or tubular designs. The black coated finish helps protect against rust and corrosion, extending the service life of the part. The included rubber bushing is designed to absorb vibrations and reduce noise, improving ride quality. The ball joint mounting is welded with a threaded stud type, allowing for secure attachment of the ball joint (sold separately). The control arm measures 262.5 mm in length, ensuring proper alignment and fitment for the specified vehicles.

Compatible Vehicles and Applications

This Dorman 521-920 control arm is compatible with the following makes and models:

• Buick 60 Special, LeSabre, Park Avenue
• Cadillac DeVille, Fleetwood, Seville
• Oldsmobile 88, 98, LSS
• Pontiac Bonneville, Grand Prix, Grand Am

It is designed to replace worn or damaged control arms in these vehicles, restoring suspension performance and safety.

Common Suspension Issues Addressed

• Excessive play or looseness in the suspension
• Uneven tire wear caused by misalignment
• Clunking or knocking noises during driving
• Poor handling or steering response
• Vibration or harshness over bumps

Installation Notes and Tips

Installation of the Dorman 521-920 control arm requires basic suspension knowledge and tools. Since the ball joint is not included, ensure you have the correct replacement ball joint for your vehicle. Press-in bushings are pre-installed, but verify their condition before installation. Torque all mounting hardware to manufacturer specifications and perform a wheel alignment after installation to maintain proper suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-920 control arm undergoes quality inspections to ensure durability and performance. While specific warranty details are not provided, Dorman typically offers limited warranties on their suspension parts. Consult product documentation or contact the manufacturer for exact warranty terms.