Keep your front suspension pivoting on a solid, properly fitted joint with the Dorman ball joint 539-921 from Dorman - OE Solutions, a front lower suspension ball joint precision-engineered and rigorously tested as a reliable replacement for the original equipment. It fits many vehicles, among them the 2003-2024 Toyota 4Runner, 2007-2014 Toyota FJ Cruiser and 2010-2023 Lexus GX460. See the "Vehicles it fits" section for the full list and engine details.
- Direct replacement: designed to fit and perform like the original equipment on the listed applications.
- Reliable fit: precision-engineered to match the design and dimensions of the original components.
- Durable construction: built to strict standards from sturdy, safe steel and rubber materials.
- Rigorously tested: thorough quality-control checks are intended to support longevity.
A lower ball joint is the pivot between the control arm and the steering knuckle. It lets the wheel steer while the suspension moves up and down. If you're replacing a worn lower ball joint on a 2003-2024 Toyota 4Runner, this unit is built for that front lower position. Signs a ball joint may need replacing include clunking over bumps, loose or wandering steering, uneven tire wear and play at the wheel. If a worn lower ball joint is the cause, this part replaces it. Have the front suspension inspected first, because other worn components can cause similar symptoms. A wheel alignment is commonly recommended after suspension work.
Interchange: 610.44069
61044069 · 45D2426 · TC4259 · TC5639 · SB3842 · K500017 · K500417 · FA2385 · FA2385E · GK500017 · MK500017 · TXMS86579 · JBJ998
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
45D2426, 610.44069, TC4259, TC5639, SB3842, K500017, K500417, FA2385, FA2385E, GK500017, MK500017, TXMS86579, JBJ998
Frequently Asked Questions
Is this the right lower ball joint for a 2003-2024 Toyota 4Runner?
Yes. The 2003-2024 Toyota 4Runner is among its listed applications, in the front lower position. Check the "Vehicles it fits" section to confirm your vehicle.
Which vehicles does the Dorman 539-921 fit?
It fits many vehicles, among them the 2003-2024 Toyota 4Runner, 2007-2014 Toyota FJ Cruiser and 2010-2023 Lexus GX460. The "Vehicles it fits" section has the full fitment chart.
What does a front lower ball joint do?
It forms the pivot between the lower control arm and the steering knuckle. This lets the wheel steer while the suspension travels up and down.
What is this ball joint made of?
Dorman states it is made of steel and rubber material. It is precision-engineered to match the design and dimensions of the original components.
What are signs a lower ball joint may need replacing?
Common signs include clunking over bumps, loose or wandering steering, uneven tire wear and play at the wheel. Diagnose the cause first, since other worn parts can cause similar symptoms.
