Delphi TC8303 Suspension Control Arm and Ball Joint Assembly - Front Right Lower

Front Right Lower Control Arm for Toyota 4Runner

Delphi TC8303 is a front right lower suspension control arm and ball joint assembly built for Toyota 4Runner and Toyota FJ Cruiser applications. It combines a stamped steel arm, pre-greased components, and a press-in ball joint for a direct replacement focused on OE-style fit and steering response.

Fits 2010-2023 Toyota 4Runner, front right lower. Fits 2009-2014 Toyota FJ Cruiser, front right lower. This part cross-references MOOG Chassis Products (e.g., RK623321) for the same application.

Key Features

• Delphi part number TC8303
• Front right lower position
• Stamped steel control arm with painted black finish
• Ball joint included with threaded stud and press-in mounting type
• Pre-greased assembly with bushings and dust boot included
• Rubber bushings and chloroprene rubber dust boot for suspension service
• Mounting hardware included
• Non-adjustable, non-greaseable design
• Power steering application

Detailed Description

Delphi TC8303 is engineered as a suspension control arm and ball joint assembly for the front right lower position on Toyota 4Runner and Toyota FJ Cruiser models. The stamped steel construction, black painted finish, and premium-grade build support consistent suspension geometry, while the included ball joint, bushings, and dust boot simplify replacement of a worn front suspension corner. Delphi applies OE-focused dimensional and material analysis to help ensure proper fit between the original and replacement part, and the assembly is tested for temperature extremes and extended salt-spray exposure to evaluate durability in demanding conditions.

Use TC8303 when servicing the front right lower suspension on a Toyota 4Runner or Toyota FJ Cruiser and you need a complete arm-and-ball-joint assembly that matches the listed fitment. The Delphi TC8303 is a practical OE-style replacement for restoring front-end control on these Toyota platforms.

Common Problems This Part Can Address

• Clunking or knocking from the front lower suspension
• Excessive play in the front right lower control arm
• Uneven tire wear caused by worn suspension joints
• Loose or imprecise steering feel at the front end
• Visible cracking or deterioration in bushings or dust boot

Installation Notes and Tips

Install TC8303 at the front right lower position only on the listed Toyota applications. Verify mounting hole size, bushing dimensions, and ball joint orientation before installation, and inspect adjacent suspension components for wear while the assembly is apart. Because this is a press-in ball joint design, proper suspension service tools and alignment procedures are recommended after replacement.

Quality Assurance

Delphi backs this steering and suspension part with OE-focused engineering practices, including dimensional and material analysis and environmental testing for heat, cold, and salt exposure. Those validation steps are used to support consistent fit and durability in aftermarket service.