Dorman 527-409 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Dorman 527-409 Front Left Lower Control Arm

Dorman 527-409 is a direct replacement suspension control arm and ball joint assembly for specific vehicle applications. It is built for the front left lower position on the Mazda CX-9 and is engineered to restore smooth ride quality, directional stability, and predictable handling.

For 2016-2023 Mazda CX-9 front left lower suspension service, this assembly provides an OE-style repair path with the ball joint already installed. The boxed steel construction, rubber and steel bushings, and pre-greased design support consistent suspension movement and simplified replacement work.

Key Features

• Direct replacement for the original equipment control arm and ball joint assembly
• Fits 2016-2023 Mazda CX-9, front left lower
• Pre-greased for initial service readiness
• Ball joint included and installed
• Boxed steel control arm construction
• Rubber and steel bushing material
• Standard replacement grade
• Black finish
• No grease fitting included
• No mounting hardware included

Detailed Description

Dorman 527-409 is engineered as a direct-fit suspension control arm assembly for the front left lower position on the Mazda CX-9. It is intended to replace worn or damaged OE components while maintaining the suspension geometry needed for stable steering response and controlled ride behavior. The assembly includes the ball joint and bushings, with a press-in ball joint mounting type and pinch-style stud design.

This part cross-references Beck/Arnley 102-8303 and Mevotech Supreme CMS761225 for the same application. If you are servicing a 2016-2023 Mazda CX-9 front left lower suspension point, Dorman 527-409 offers a practical OE-style replacement option.

What It Helps Address

• Clunking or knocking from a worn lower control arm assembly
• Loose or imprecise steering feel
• Uneven tire wear caused by suspension wear
• Directional instability during braking or cornering
• Excess movement from deteriorated bushings or ball joint wear

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and front left lower position before installation. Because the ball joint is installed and the assembly is pre-greased, replacement can be streamlined compared with rebuilding individual suspension components. Inspect adjacent suspension parts, alignment angles, and fasteners during service, and perform a professional wheel alignment after installation.

Quality Assurance

Dorman uses an industry-leading evaluation process to help ensure the replacement assembly delivers smooth ride quality, directional stability, and predictable dynamics. The part is built as a standard replacement for specific Mazda CX-9 applications and is designed to match the original equipment form and function.