Dorman 527-521 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

OE-Style Front Left Lower Rearward Control Arm

Dorman 527-521 is a suspension control arm and ball joint assembly for specific Tesla applications. It is built as a direct replacement for the original equipment design, with a focus on smooth ride quality, directional stability, and predictable handling. Compatible with 2017-2025 Tesla 3 and 2020-2025 Tesla Y in the front left lower rearward position.

Key Features

• Direct replacement suspension control arm and ball joint assembly
• Fits 2017-2025 Tesla 3, front left lower rearward
• Fits 2020-2025 Tesla Y, front left lower rearward
• Pre-greased for initial service readiness
• Grease fitting included for future maintenance
• Ball joint included and installed
• Steel control arm construction with casting/forged design
• Rubber and steel bushings included
• Black finish
• Standard replacement grade
• Mounting hardware included

Detailed Description

Dorman 527-521 is engineered as an OE-style suspension control arm assembly for Tesla 3 and Tesla Y models in the front left lower rearward location. The assembly includes the ball joint, bushings, and mounting hardware, and it arrives pre-greased with a grease fitting for serviceability. Its steel construction and casting/forged control arm design support consistent suspension geometry, while the machined ball joint mounting and threaded stud help maintain secure fitment. This part cross-references MOOG Chassis Products RK623778 for the same application.

Common Repair Symptoms

• Clunking or knocking from the front suspension
• Loose or imprecise steering feel
• Uneven tire wear caused by worn suspension joints
• Directional instability during braking or lane changes
• Excess play from a worn control arm or ball joint

Installation Notes

Verify vehicle year, model, and front left lower rearward position before installation. Inspect adjacent suspension components, alignment angles, and fasteners during replacement. Because this assembly includes a pre-installed ball joint and bushings, it is suited for replacing a worn OE unit in one service operation. After installation, a professional wheel alignment is recommended to restore suspension geometry.

Quality Assurance

Dorman uses an industry-focused evaluation process for this assembly to help deliver consistent ride quality, directional stability, and predictable dynamics. The part number is 527-521.