Parts for your 2008 Toyota Mark x-Wheel hubs

2008 Toyota Mark X wheel hubs — what they do and when to service them

Wheel hubs are absolutely relevant to the 2008 Toyota Mark X (GRX12x). Toyota’s Repair Manual for the GRX120/121 series details “Front Axle Hub” and “Rear Axle Hub” removal/installation procedures, and the Toyota Electronic Parts Catalog lists “Front Axle Hub Sub-Assembly” and “Rear Axle Hub & Bearing Assembly” for this model. Major bearing manufacturers’ catalogues also list complete hub units for the Mark X across these years. So yes — the 2008 Mark X is fitted with wheel hubs front and rear.

On a 2008 Toyota Mark X, the wheel hubs sit between the wheels and the suspension knuckles, allowing the wheels to rotate smoothly while keeping everything tight and true. Each hub assembly houses a sealed bearing, the mounting face for the wheel, and provisions for the ABS sensor/encoder. The fronts on the Mark X (RWD) are non-driven bolt-on hub units, while the rears are hub-and-bearing assemblies that carry the axle shaft and read the ABS tone/encoder.

Because these are sealed units, there’s no periodic greasing — they’re designed to be low-maintenance. Servicing revolves around inspection and timely replacement. During routine services or tyre rotations (say every 10,000 km), it’s smart to check for play at the wheel (grasp at 12 and 6 o’clock), listen for a growl that rises with road speed, and look for ABS warning lights. Any rumbling, looseness, or roughness points to a tired hub bearing.

When replacing, go with quality hub assemblies suited to your exact GRX12x variant (RWD vs AWD, and ABS spec). The front hubs are typically a straightforward bolt-off/bolt-on job. At the rear, take extra care with the ABS sensor and wiring — they’re easy to damage. Avoid hammering the hub