Dorman 521-412 Suspension Control Arm - Rear Left Upper, Rear Right Upper or Rear Upper

Reliable Suspension Control Arm for Ford, Mazda, and Volvo Vehicles

The Dorman 521-412 suspension control arm is engineered to provide dependable performance for select Ford, Mazda, and Volvo models. Designed with durable iron construction and a coated black finish, this control arm ensures long-lasting service in your vehicle's suspension system.

Key Features of the Dorman 521-412 Control Arm

• Constructed from robust iron with casting and forging methods for strength
• Black coated finish for corrosion resistance and durability
• Includes a rubber bushing with a black color and precise dimensions (14.3 mm inside diameter, 39.6 mm outside diameter, 92 mm length)
• Overall length of 262.5 mm for accurate fitment
• Welded ball joint mounting type with threaded ball joint stud (ball joint not included)
• Press-in end type with bushing linkage end for secure suspension connection

Detailed Product Description

The Dorman 521-412 suspension control arm is designed to replace worn or damaged control arms on compatible vehicles, including Ford Focus, Ford C-Max, Mazda 3 and 3 Sport, Volvo S40, V50, and C30 models. Its iron construction combines casting and forging techniques to provide a balance of strength and durability. The black coated finish helps protect against rust and environmental wear. This control arm comes with a rubber bushing pre-installed, which helps absorb road vibrations and maintain proper suspension alignment. The welded ball joint mounting type and threaded stud allow for secure attachment of the ball joint (sold separately). With an overall length of 262.5 mm, this control arm matches OEM specifications for a precise fit.

Common Suspension Issues Addressed

• Excessive suspension noise or clunking during driving
• Uneven tire wear caused by misaligned suspension components
• Loose or unstable steering feel due to worn control arm bushings
• Vibrations or harshness transmitted through the suspension
• Reduced handling performance and vehicle stability

Installation Notes and Tips

Before installation, verify compatibility with your specific vehicle make and model. The Dorman 521-412 control arm does not include a ball joint or mounting hardware, so these components must be sourced separately if needed. Proper torque specifications should be followed when securing the control arm to ensure safe and reliable operation. It is recommended to have a professional alignment performed after installation to maintain optimal suspension geometry.

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-412 control arm undergoes rigorous quality checks to ensure durability and performance. While specific warranty details are not provided, Dorman typically offers limited warranties on their suspension parts to cover defects in materials and workmanship.