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Lexus SC430 Control Arm & Ball Joint Assemblies
Lexus Sc430 Control arm & ball joint assemblys
Control arm and ball joint assemblies for the Lexus Sc430 start at $33.95. We stock 27 units from Mevotech Supreme, Mevotech Original Grade, and Beck/Arnley. This combined assembly connects the wheel hub to the vehicle's frame, allowing the wheel to move up and down while staying aligned. When it wears out, the ball joint can separate — causing sudden, dangerous loss of steering control.
Signs your Lexus Sc430 needs a new control arm and ball joint assembly
- Clunking or knocking noise from the front suspension when hitting bumps or turning
- Steering wheel pulls noticeably to one side on a flat, straight road
- Front tires show uneven or accelerated wear on the inner or outer edge
- Vehicle wanders or feels loose at highway speeds despite a straight road
- Visible play or slop in the wheel when rocked at the 12 and 6 o'clock positions with the vehicle lifted
- Front end vibration that worsens during acceleration or light braking
Which control arm and ball joint assembly should you buy for your Lexus Sc430?
The main decision is whether to buy an OE-replacement assembly, a heavy-duty/greaseable upgrade, or a position-specific unit (upper vs. lower, driver vs. passenger). Most front suspensions use lower control arms with integrated ball joints, though some Lexus Sc430 configurations also require an upper arm. Matching the correct side and grade to your driving conditions matters more than brand alone.
OE-Replacement Assembly
Best for
Daily drivers needing a direct, hassle-free swap
What you get
Factory-equivalent geometry, pre-assembled ball joint, no modifications required
Heavy-Duty / Greaseable Assembly
Best for
High-mileage vehicles, towing, or rough-road use
What you get
Reinforced ball joint stud, grease fitting for extended service life, increased load rating
Lower Control Arm Assembly
Best for
Most common replacement; handles braking and cornering loads
What you get
Integrated lower ball joint, bushings included, corrects camber and caster alignment
Upper Control Arm Assembly
Best for
Vehicles with double-wishbone or SLA suspension needing upper-arm replacement
What you get
Upper ball joint pre-installed, often includes alignment cam bolts or slots for adjustability
| Option | Best for | What you get |
|---|---|---|
| OE-Replacement Assembly | Daily drivers needing a direct, hassle-free swap | Factory-equivalent geometry, pre-assembled ball joint, no modifications required |
| Heavy-Duty / Greaseable Assembly | High-mileage vehicles, towing, or rough-road use | Reinforced ball joint stud, grease fitting for extended service life, increased load rating |
| Lower Control Arm Assembly | Most common replacement; handles braking and cornering loads | Integrated lower ball joint, bushings included, corrects camber and caster alignment |
| Upper Control Arm Assembly | Vehicles with double-wishbone or SLA suspension needing upper-arm replacement | Upper ball joint pre-installed, often includes alignment cam bolts or slots for adjustability |
Control arm & ball joint assemblys brands we stock for your Lexus Sc430
Mevotech Supreme
5 options · from $71.95
Mevotech Original Grade
4 options · from $106.95
Beck/Arnley
3 options · from $98.95
Delphi
3 options · from $75.95
Detroit Axle
3 options · from $51.95
Dorman
2 options · from $105.95
MOOG
2 options · from $148.95
SKP
2 options · from $33.95
Suspensia
2 options · from $95.95
ACDelco
1 option · from $198.95
Replacing a control arm and ball joint assembly on a Lexus Sc430
Advanced⏱ 2-4 hours per sideFloor jack and jack standsBreaker bar and metric/standard socket setTorque wrenchBall joint separator or pickle forkRubber mallet
After safely lifting and supporting the Lexus Sc430 and removing the wheel, disconnect the ball joint taper from the steering knuckle using a separator tool, then unbolt the control arm from the frame mounts. Install the new assembly in reverse order, hand-tightening all fasteners before lowering the vehicle to ride height, then torque to specification with the suspension loaded. Always follow up with a professional four-wheel alignment before returning the vehicle to normal use.
Frequently asked questions
How much does it cost to replace control arm and ball joint assemblies on a Lexus Sc430?
Parts start at $33.95 for a single assembly on the Lexus Sc430. Most owners replace both sides at once, so budget for two units plus alignment. Professional labor typically adds one to two hours of shop time per side. Doing it yourself with basic tools keeps total cost close to the parts price alone.
Can I replace just the ball joint instead of the whole control arm assembly on my Lexus Sc430?
On many Lexus Sc430 applications the ball joint is pressed into the control arm and can be replaced separately, but it requires a press and precise fitment. Buying the complete assembly is usually faster, often similarly priced, and eliminates the risk of improper press-fit installation. If the control arm bushings also show wear, the assembly replacement makes even more sense.
Is it safe to drive a Lexus Sc430 with a worn or failing ball joint?
No. A worn ball joint is one of the most serious suspension failures you can ignore. If the stud separates from the socket while driving, the wheel can fold under the vehicle without warning, causing an immediate loss of steering and braking. Clunking, pulling, or play in the wheel should be inspected and repaired before the vehicle is driven further.
Do I need a wheel alignment after replacing control arm and ball joint assemblies on a Lexus Sc430?
Yes, always. Replacing a control arm changes the pivot point of the suspension, which directly affects camber, caster, and toe alignment. Driving without a post-installation alignment will cause rapid, uneven tire wear and unpredictable steering. Budget for a four-wheel alignment immediately after the repair is complete.
How long do control arm and ball joint assemblies last on a Lexus Sc430?
Service life varies widely depending on road conditions, driving style, and maintenance. On smooth roads with average use, assemblies commonly last many years and well over 100,000 miles. Frequent off-road use, pothole-heavy roads, or lack of lubrication on greaseable joints shortens that lifespan considerably. Inspect the assembly any time you have the wheels off.
Should I replace control arm and ball joint assemblies in pairs on a Lexus Sc430?
It is strongly recommended. Both sides of the suspension experience identical stress and age at the same rate. Replacing only the failed side leaves a worn assembly on the opposite side that is likely to fail soon. Replacing both at once saves on labor, ensures balanced handling, and means only one alignment job.