Delphi TC8304 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Front Left Lower Control Arm Assembly

Delphi TC8304 is a premium suspension control arm and ball joint assembly for the front left lower position. It is built for 2010-2023 Toyota 4Runner and 2009-2014 Toyota FJ Cruiser applications, with OE-focused materials and dimensional checks for proper fit and steering response.

Delphi applies OE-level testing to its steering and suspension parts, including exposure to extreme temperatures and extended salt-spray testing. This TC8304 assembly is a direct-fit replacement for the front left lower suspension position on Toyota 4Runner and Toyota FJ Cruiser models listed below.

• Fits 2010-2023 Toyota 4Runner, front left lower
• Fits 2009-2014 Toyota FJ Cruiser, front left lower
• Stamped steel control arm with painted black finish
• Pre-greased assembly with ball joint included
• Press-in ball joint mounting with threaded stud type
• Rubber bushings and chloroprene rubber dust boot
• Mounting hardware included
• Clockwise (right) thread direction
• Premium grade construction for OE-style replacement

Detailed Product Overview

Delphi TC8304 is engineered as a suspension control arm and ball joint assembly for the front left lower corner of the chassis. The stamped steel arm, rubber bushings, and press-in ball joint are specified for direct replacement service on Toyota 4Runner and Toyota FJ Cruiser platforms. Delphi’s OE expertise is reflected in the part’s dimensional and material analysis, helping maintain proper alignment geometry and suspension articulation. This part cross-references MOOG Chassis Products RK623322 for the same application.

Common Problems This Part Can Address

• Excessive front-end looseness or wandering
• Clunking or knocking from the lower suspension area
• Uneven tire wear related to worn control arm bushings or ball joint wear
• Steering pull or inconsistent road feel at the front left lower corner
• Visible cracking, play, or corrosion in the original control arm assembly

Installation Notes and Tips

Verify the front left lower position before installation and confirm all mounting points match the vehicle’s original configuration. Because this assembly is pre-greased and includes the ball joint, it is ready for installation once the old component is removed. After replacement, a professional wheel alignment is recommended to restore suspension geometry on the Toyota 4Runner or Toyota FJ Cruiser.

Quality Assurance

Delphi tests steering and suspension components under extreme temperature and corrosion conditions, including sub-zero and high-heat exposure plus extended salt-spray testing. The brand’s OE-focused engineering and material analysis are used to support fit and durability across the listed applications.