Delphi TC5665 Suspension Ball Joint - Front Upper

Delphi TC5665 Front Upper Ball Joint

Delphi TC5665 is a standard replacement suspension ball joint for front upper applications on select Lexus and Toyota trucks and SUVs. Built with OE-focused dimensional and material analysis, it is made to match the original fit and function for service on vehicles such as the Toyota 4Runner, Toyota Land Cruiser, Lexus GX470, Lexus LX470, and Lexus LX570.

Key Features

• Front upper suspension ball joint assembly
• Steel construction with silver finish
• Press-in mounting type for OE-style service fit
• Dust boot included with chloroprene rubber (CR) material
• Castle nut, cotter pin, cotter pin hole, and mounting hardware included
• Threaded tapered stud with 14.0 mm stud thread diameter and 1.5 pitch
• Standard replacement, non-adjustable, non-greaseable design
• Delphi part number TC5665

Detailed Description

Delphi TC5665 is engineered for front upper suspension service where precise joint movement and secure steering geometry matter. Delphi subjects its OE-based steering and suspension parts to extreme temperature cycling and long-duration salt spray exposure, then verifies dimensional and material compatibility to help ensure the aftermarket part matches the original application. This ball joint is a press-in style assembly with a tapered threaded stud, dust boot, and included fasteners for a clean OE-style replacement on the front upper position.

Compatible With 1998-2007 Lexus LX470, front upper; 2003-2009 Lexus GX470, front upper; 2008-2011 Lexus LX570, front upper; 2013-2021 Lexus LX570, front upper; 1998-2011 Toyota Land Cruiser, front upper; 2013-2021 Toyota Land Cruiser, front upper; 2003-2009 Toyota 4Runner, front upper; and 2007-2009 Toyota FJ Cruiser, front upper. This part cross-references MOOG Chassis Products RK621227 and RK621228 for the same application.

What It Helps Address

• Front-end looseness or play from a worn upper ball joint
• Clunking or knocking noises over bumps and turns
• Uneven tire wear caused by suspension joint wear
• Steering wander or reduced directional stability
• Restoration of proper front suspension articulation on Lexus and Toyota platforms

Installation Notes and Tips

Because this is a press-in ball joint, proper removal and installation tools are recommended to avoid damage to the control arm or surrounding components. Inspect the mating surfaces, verify the tapered stud orientation, and confirm torque specifications for the castle nut and related hardware during assembly. After installation, a professional alignment is recommended for vehicles such as the Toyota Land Cruiser, Toyota 4Runner, and Lexus GX470/LX470/LX570.

Quality Assurance

Delphi applies OE-level engineering practices to its aftermarket steering portfolio and validates parts through temperature and corrosion testing to support consistent fit and durability. The TC5665 is built as a standard replacement suspension ball joint for front upper service.