Keep your front suspension tight and your steering predictable with the Beck/Arnley Suspension Ball Joint 101-4005, a front lower ball joint that installs as a direct replacement on the 1986-1989 Toyota 4Runner and the 1986-1989 Toyota Pickup. It connects the lower control arm to the steering knuckle, letting the suspension move up and down while the wheel steers, which makes it a direct-fit 1986-1989 Toyota 4Runner ball joint option.
Worn ball joints often show up as clunking over bumps, loose or wandering steering, and uneven tire wear; if a failed front lower ball joint is the cause, this part replaces it. Because both sides tend to wear at a similar pace, inspecting and, if needed, replacing the opposite side helps keep handling balanced.
Interchange: 45D2142 · 1012432 · 61044025 · BJ75075XL · 37251017534 · 4333039195 · 1643101 · K9587 · FA1612 · MK9587 · 5051142 · 5051169 · 10434 · 4334039175
This part cross-references / interchanges with the following part numbers:
Is this the right ball joint for a 1986-1989 Toyota 4Runner?
Yes — it's a front lower ball joint for the 1986-1989 Toyota 4Runner and 1986-1989 Toyota Pickup. Check the Buyer's Guide tab to confirm your exact vehicle.
What are the signs I need a ball joint replacement?
Clunking over bumps, loose or wandering steering, and uneven tire wear can point to a worn ball joint. Diagnose the cause before replacing.
Where is this ball joint located?
It's the front lower ball joint, joining the lower control arm to the steering knuckle so the suspension can move while the wheel steers.
Is mounting hardware included?
Beck/Arnley supplies any necessary hardware as needed for a complete installation, matching the original design requirements. Consult the service procedure for correct torque.
Should I replace both sides at once?
Ball joints tend to wear at a similar rate, so inspecting and replacing the opposite side at the same time is good practice for balanced, even handling.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
