Parts for your 2006 Toyota Mark x-Control arms

2006 Toyota Mark X Control Arms

Control arms are absolutely used on the 2006 Toyota Mark X (chassis GRX120/GRX121). Technical sources including the Toyota Repair Manual for GRX120/121 suspension, the Toyota New Car Features (NCF) publication, and the Toyota Electronic Parts Catalogue (EPC) detail a front double-wishbone layout (upper and lower control arms each side) and a rear multi-link arrangement with several control arms and toe links. So, control arms are not only relevant to this model — they’re core to how it steers, rides, and handles.

On the Mark X, the control arms locate the wheels precisely, keeping camber, caster, and toe where they should be through bumps, braking, and cornering. The rubber bushes in the arms isolate vibration and road harshness, while the ball joints allow the hub to pivot smoothly. Up front, the double-wishbone setup sharpens steering feel and tyre contact, at the rear, the multi-link arms help the car track straight and stay composed over dodgy surfaces.

Like any suspension gear, these parts wear. Bushes can crack, split, or oil-soak, and ball joints can loosen or develop play — especially if dust boots tear and let in grit. As part of routine servicing, it’s smart to inspect the control arms every 20,000–30,000 kilometres or at each major service. A proper check means looking for perished bushes, torn boots, rust on arms, and any free play when the wheel is levered.

• Common signs to watch for: clunks over bumps, vague steering, wandering on the motorway, vibration under braking, and uneven tyre wear (inner/outer shoulders).

If replacement’s on the cards, go for quality OEM or reputable aftermarket components. On some Mark X arms, bushes can be pressed in, on others, or where the ball joint is integral, the whole arm is the go. Always torque rubber-bushed fasteners at normal ride height to avoid preloading the bushes, replace arms in axle pairs where practical, and finish with a four-wheel alignment to reset camber/caster/toe. In coastal parts of Australia and New Zealand, give corrosion a quick once-over during WOF/rego time. Getting this right keeps the Mark X driving the way Toyota intended — planted, quiet, and confidence-inspiring.

How many control arms does a 2006 Mark X have?

The front uses a double-wishbone layout — that’s an upper and a lower arm on each side. The rear is a multi-link design with multiple arms and a toe link per side. Exact counts vary by specification, but both ends rely on control arms to hold alignment under load.

Do I need a wheel alignment after changing control arms?

Yes. Any change to arms, bushes, or ball joints can nudge camber, caster, or toe. A professional four-wheel alignment protects tyre life and restores that tidy Mark X steering feel.

Can I replace just the bushes, or do I need the whole arm?

Both options exist. Many bushes can be pressed in with the right tools, if the ball joint is worn or the arm is corroded/warped, replacing the complete arm is usually better value and quicker in the workshop.