Parts for your 2006 Toyota Mark x-Wheel hubs

2006 Toyota Mark X wheel hubs — what they do and how to look after them

Wheel hubs are absolutely fitted to the 2006 Toyota Mark X. This is confirmed by Toyota’s Electronic Parts Catalog for the GRX12# series, the Toyota Mark X (GRX120/125) Repair Manual sections covering “Front Axle Hub” and “Rear Axle Hub,” and mainstream bearing manufacturers’ catalogues that list complete hub-and-bearing assemblies for this model. So wheel hubs are relevant and serviceable items on the 2006 Mark X.

On this Mark X, the wheel hub is the rigid mounting that the wheel bolts to, housing a sealed bearing and, in most cases, an ABS encoder. It supports the vehicle’s weight, lets the wheel spin smoothly, keeps the brake rotor running true, and feeds wheel speed data to ABS and stability control. For RWD Mark X variants, the front hubs are non-driven while the rear hubs are driven by the axle shafts. AWD versions have driven hubs front and rear. In all cases they’re sealed, bolt-on units designed for quiet, low-friction running.

Because the bearings are sealed, there’s no greasing or preload adjustment in regular servicing. What matters is inspection. During a service, a good workshop will spin each wheel listening for growl, check for play at 12 and 6 o’clock, confirm the ABS wiring isn’t chafed, and make sure the hub face is clean so the rotor and wheel sit flat.

• Typical wear signs: a speed-dependent humming that changes with steering input, noticeable wheel play, ABS or VSC warning lights, heat at the hub after a drive, and uneven brake pad imprinting on the rotor.

When replacement’s due, the best practice is to fit a complete hub assembly that matches the VIN and driveline (RWD or AWD). Pressing bearings in and out isn’t normally required or recommended for this model’s hub design. Use quality parts, protect the ABS sensor, and torque all fasteners and wheel nuts to Toyota specifications. If an axle nut is used (driven hubs), replace it with a new one as specified by Toyota. An alignment check is sensible if any suspension fasteners were disturbed.

• Aftercare tips: re-torque wheel nuts after 50–100 kilometres, road-test on a quiet surface to confirm the noise is gone, and avoid blasting the hub area with high-pressure washers.

There’s no fixed interval for hub replacement, many last well beyond 150,000–250,000 kilometres. Big potholes, oversized wheels, or frequent heavy loads can bring that forward, so periodic checks are the smart move.

FAQ

What are the tell-tale signs a 2006 Mark X wheel hub is failing?

Most owners notice a low humming or droning that gets louder with speed and often changes when gently weaving the car. There may be free play when rocking the wheel at 12 and 6 o’clock, an ABS/VSC warning, or the hub area feeling unusually hot after a drive. Any of these are a cue to have the hubs checked promptly.

Do the front and rear hubs differ on the 2006 Mark X?

Yes. On RWD models, the front hubs are non-driven and the rear hubs are driven by the axle shafts. AWD models have driven hubs front and rear. Part numbers, ABS encoder styles, and load ratings can differ, so matching by VIN and driveline is important.

Can just the bearing be replaced, or does the whole hub need changing?

For this model, the bearing is integrated into a sealed hub unit. The reliable and time-efficient fix is to replace the complete hub assembly. That avoids press-fit risks, preserves ABS functionality, and restores correct preload from the factory.