Delphi TC3324 Suspension Control Arm and Ball Joint Assembly - Front Left Upper

Front Left Upper Control Arm Assembly

Delphi TC3324 is a front left upper suspension control arm and ball joint assembly for select Lexus GX460, Lexus GX470, Toyota 4Runner, and Toyota FJ Cruiser applications. Built as a standard replacement part, it combines OE-focused dimensions with a stamped steel arm, pre-greased construction, and included bushings for direct service replacement.

Key Features

• Front left upper position for confirmed vehicle applications
• Stamped steel control arm with black finish
• Pre-greased assembly with rubber bushings included
• Press-in ball joint with threaded stud design
• Mounting hardware included
• Light suspension grade, standard replacement construction
• Delphi TC3324 cross-references Beck/Arnley 102-6325 and MOOG RK620064 for the same application

Detailed Description

Delphi TC3324 is engineered for OE-style fit and function in the front left upper suspension location. Delphi applies dimensional and material analysis to match aftermarket fitment to OE requirements, and the part is tested across extreme temperature ranges and salt-spray exposure to verify durability in demanding road conditions. This makes it a practical replacement for worn upper control arm and ball joint assemblies on 2003-2022 Toyota 4Runner, 2003-2009 Lexus GX470, 2010-2022 Lexus GX460, and 2007-2014 Toyota FJ Cruiser applications, including the 2014 FJ Cruiser through 07/2014.

What It Helps Fix

• Front-end looseness or wandering caused by worn control arm bushings
• Clunking or knocking from a worn upper ball joint
• Uneven tire wear related to suspension joint play
• Steering instability from fatigued front suspension components
• Corrosion-related replacement needs on aging OE suspension parts

Installation Notes and Tips

Verify the front left upper position before installation and compare the original arm dimensions, ball joint stud style, and mounting hole layout to the removed part. Because this assembly uses a press-in ball joint and includes mounting hardware, proper suspension support and torque procedures are important during service. After installation, a professional alignment is recommended for Lexus GX460, Lexus GX470, Toyota 4Runner, and Toyota FJ Cruiser applications.

Quality Assurance

Delphi builds this suspension control arm assembly using OE-focused engineering and validation methods, including temperature and corrosion testing. The part number TC3324 is backed by Delphi’s aftermarket steering and suspension expertise for standard replacement service.