Dorman 521-915 Suspension Control Arm - Rear Left Lower

Overview of Dorman Suspension Control Arm 521-915

The Dorman Suspension Control Arm 521-915 is designed specifically for Ford Expedition models, providing reliable suspension performance. Crafted from durable aluminum with a coated black finish, this control arm offers a balance of strength and corrosion resistance for long-lasting use.

• Constructed from aluminum with casting and forging for enhanced 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 on Ford Expedition vehicles
• Features a welded ball joint mounting type with a threaded stud (ball joint not included)
• Coated finish to resist corrosion and wear
• Press-in end type with bushing linkage end for secure installation
• Includes bushings but excludes mounting hardware and ball joint

Detailed Product Description

This Dorman suspension control arm (part number 521-915) is engineered to meet the suspension needs of Ford Expedition models. The aluminum construction combines casting and forging techniques to provide a strong yet lightweight component that withstands the stresses of daily driving. The black coated finish helps protect against rust and environmental damage, extending the service life of the control arm.

The control arm comes equipped with a single rubber bushing designed to absorb vibrations and reduce noise, improving ride quality. The bushing measures 14.3 mm inside diameter and 39.6 mm outside diameter, with a length of 92 mm, ensuring proper fit and function. The welded ball joint mounting type with a threaded stud allows for secure attachment of the ball joint, although the ball joint itself is not included with this part.

Common Suspension Issues Addressed

• Worn or damaged control arm bushings causing excessive play or noise
• Corroded or weakened control arm compromising suspension stability
• Misalignment or uneven tire wear due to faulty control arm components
• Vibration and handling issues related to suspension wear
• Replacement of bent or damaged control arms after impact or wear

Installation Notes and Tips

• Compatible with Ford Expedition models; verify fitment before installation
• Ball joint must be purchased separately and installed onto the welded mounting point
• Mounting hardware is not included; reuse existing hardware or acquire new fasteners as needed
• Ensure proper torque specifications are followed during installation to maintain suspension integrity
• Inspect related suspension components for wear or damage during replacement

Quality Assurance and Warranty

Dorman suspension control arms are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-915 control arm undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation for exact warranty terms.