Delphi TC4018 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

OE-Style Front Right Lower Control Arm

Delphi TC4018 is a front right lower suspension control arm and ball joint assembly built for OE-style replacement on select Hyundai Sonata and Kia Optima applications. It combines an aluminum control arm with a press-in ball joint, pre-greased components, and included bushings for a direct-fit suspension service part.

Fits 2017-2020 Kia Optima, front right lower. Fits 2015-2019 Hyundai Sonata, front right lower.

Key Features

• Delphi premium-grade suspension control arm and ball joint assembly
• Aluminum control arm construction with casting/forged design
• Press-in ball joint with grooved stud
• Pre-greased with bushings and dust boot included
• Mounting hardware included
• Black rubber bushings and chloroprene rubber dust boot
• Uncoated finish
• Designed for power steering applications

Detailed Description

Delphi TC4018 is engineered for the front right lower position and built to match OE dimensions and material requirements for proper suspension geometry. Delphi applies dimensional and material analysis to improve fitment consistency between original equipment and aftermarket replacement parts, while its testing process includes exposure to extreme temperatures and extended salt-spray conditions. This part cross-references MOOG Chassis Products RK623734 for the same application.

For drivers searching for a front right lower control arm for 2015-2019 Hyundai Sonata or 2017-2020 Kia Optima, Delphi TC4018 provides a direct replacement solution with the ball joint, bushings, and dust boot already integrated into the assembly. The aluminum construction helps keep the assembly lightweight while maintaining the strength needed for everyday suspension loads.

Common Repair Symptoms

• Clunking or knocking from the front suspension
• Excessive play in the front right lower control arm
• Uneven tire wear caused by worn suspension joints
• Steering wander or reduced front-end stability
• Noise from deteriorated bushings or ball joint wear

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and front right lower position before installation. Inspect adjacent suspension components, alignment angles, and mounting points for wear or damage during replacement. Because the ball joint is press-in and the assembly includes bushings and a dust boot, proper suspension service tools and a professional alignment are recommended after installation.

Quality Assurance

Delphi uses OE-focused engineering, dimensional checks, and material analysis to support consistent replacement quality. The part is tested under extreme temperature and corrosion exposure conditions to help confirm durability for real-world suspension service.