Delphi TC1720 Suspension Ball Joint - Front Lower

OE-Style Front Lower Ball Joint

Delphi TC1720 is a standard replacement suspension ball joint for the front lower position on select Toyota trucks and SUVs. It is built with OE-focused dimensional and material analysis to support proper fitment on 1985-1989 Toyota 4Runner and 1986-1989 Toyota Pickup applications.

For buyers searching for a front lower ball joint for Toyota 4Runner or Toyota Pickup, TC1720 provides a direct replacement format with the key service parts needed for a suspension repair.

Key Features

• Fits 1985-1989 Toyota 4Runner, front lower
• Fits 1986-1989 Toyota Pickup, front lower
• Delphi part number TC1720
• Steel construction with black finish
• Ball joint assembly with dust boot included
• Greaseable design with threaded stud
• Castle nut, cotter pin, nuts, and mounting hardware included
• Standard replacement suspension grade
• Tapered stud design for OE-style suspension fitment

Product Details

Delphi TC1720 is engineered as a front lower suspension ball joint for Toyota 4Runner and Toyota Pickup models from the late 1980s. Delphi applies OE dimensional and material analysis to help match the original part’s interface, while the component is tested for temperature extremes and salt-spray exposure to support durability in demanding undercar conditions. The dust boot uses chloroprene rubber, and the assembly is greaseable for serviceability.

This part cross-references MOOG Chassis Products K9587 and Mevotech Supreme MK9587 for the same application. If you are replacing a worn front lower ball joint on a Toyota 4Runner or Toyota Pickup, Delphi TC1720 is a direct-fit service part to compare against OE specifications.

Common Problems This Part Can Address

• Front-end looseness or play from a worn ball joint
• Clunking or knocking from the lower suspension area
• Uneven tire wear related to suspension joint wear
• Steering instability caused by excess joint movement
• Inspection failure due to damaged or worn front lower suspension components

Installation Notes and Tips

Verify the vehicle year, make, model, and front lower position before installation. Inspect the surrounding control arm, fasteners, and steering components for wear before pressing or bolting in the new joint. Because this is a greaseable ball joint, service the fitting according to the vehicle’s maintenance schedule after installation.

Quality Assurance

Delphi uses OE-based engineering and dimensional checks to support aftermarket fit and function. The part is also subjected to temperature testing below -40 degrees C and above 120 degrees C, along with 720 hours of salt spray exposure, to evaluate durability in harsh operating conditions.