Dorman 521-603 Suspension Control Arm - Front Left Lower Forward

Overview of Dorman Suspension Control Arm 521-603

The Dorman Suspension Control Arm 521-603 is engineered for reliable suspension performance on Nissan 350Z and Infiniti G35 models. Constructed from durable aluminum with a coated black finish, this control arm offers a balance of strength and corrosion resistance for consistent handling.

• Material: Aluminum construction for lightweight durability
• Coated black finish to resist corrosion
• Includes rubber bushing with black color and precise dimensions
• Welded ball joint mounting with threaded stud type (ball joint not included)
• Overall length of 262.5 mm for exact fitment
• Press-in end type with bushing linkage end
• Compatible with Nissan 350Z and Infiniti G35 suspension systems

Detailed Product Description

This Dorman suspension control arm (part number 521-603) is designed specifically for the suspension systems of Nissan 350Z and Infiniti G35 vehicles. The aluminum casting and forging construction provides a strong yet lightweight component that helps maintain proper wheel alignment and suspension geometry. The control arm features a coated black finish to protect against rust and wear over time. It includes a single rubber bushing with a 14.3 mm inside diameter and 39.6 mm outside diameter, ensuring smooth pivoting and vibration absorption. The ball joint mounting is welded with a threaded stud type, although the ball joint itself is not included. This control arm measures 262.5 mm in length, matching OEM specifications for direct replacement.

Common Applications and Problem Resolution

• Restores proper suspension alignment and handling on Nissan 350Z and Infiniti G35
• Replaces worn or damaged control arms causing uneven tire wear
• Eliminates clunking or knocking noises from suspension movement
• Improves steering response and vehicle stability
• Addresses bushing deterioration that leads to excessive play

Installation Notes and Tips

• Ensure compatibility with Nissan 350Z and Infiniti G35 models before installation
• Ball joint must be sourced separately as it is not included with this control arm
• Use proper torque specifications for mounting hardware (not included)
• Inspect surrounding suspension components during installation for wear
• Professional installation is recommended to maintain suspension geometry

Quality Assurance and Warranty

Dorman suspension components are manufactured to meet or exceed OEM standards for fit and function. The 521-603 control arm undergoes rigorous quality checks to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in materials and workmanship. Refer to Dorman’s official documentation for exact warranty terms.