Parts for your 2012 Subaru Exiga-Wheel hubs

2012 Subaru Exiga wheel hubs: what they do and how to look after them

Based on technical documentation, wheel hubs are absolutely fitted and relevant on the 2012 Subaru Exiga (YA series). The Subaru Factory Service Manual (FSM) for the YA Exiga, the Subaru FAST electronic parts catalogue, and hub-unit bearing catalogues from major OE suppliers (e.g., NTN/NSK) all show bolt-on hub unit bearings at each corner, with integrated wheel studs and ABS encoder functionality.

On the 2012 Exiga, the wheel hub assembly sits between the driveshaft (front and many AWD rears) or stub axle and the brake rotor, letting the wheel spin smoothly while keeping everything aligned. It also carries the ABS/Vehicle Dynamics Control encoder, so a worn hub can trigger ABS lights as well as cause that classic humming or growling that changes with speed. Because Subaru uses sealed, bolt-on hub unit bearings on most YA Exiga variants, there’s no greasing or adjustment, they’re designed to be “fit and forget” until wear shows up.

As part of regular servicing, the workshop will usually check for noise, roughness and play. A quick spin test with the wheel off the ground, plus a check for looseness at 12-and-6 o’clock, tells a lot. Any metallic rumble, notchiness, ABS faults tied to wheel speed, or uneven tyre wear can point straight at a tired hub unit.

• Common signs it’s time: speed-dependent humming, wobble or vibration, ABS/VDC warnings, heat around the hub after a drive, or uneven tyre wear.
• Causes of early wear: potholes and kerb hits, water intrusion after seal damage, over-torqued/under-torqued axle nuts, or track work/towing adding load.

Replacement on the Exiga is typically a straightforward bolt-off/bolt-on job: remove the calliper and rotor, unplug the ABS lead if it’s integrated, unbolt the hub from the knuckle, and fit the new unit. The axle nut and hub bolts must be torqued to the factory spec found in the Subaru FSM, and it pays to clean the knuckle face so the new hub seats flat. Quality matters—OE or reputable OE-equivalent hubs (with the correct ABS encoder type) help avoid comebacks. After refitting, a road test and a scan for ABS faults tidy things up.

There’s no set kilometre interval because these hubs are sealed, however, having them checked at every service and after any suspension or brake work is smart. Catching a droning hub early keeps tyres happy, braking consistent, and the Exiga feeling tight and safe on Aussie and Kiwi roads.

Popular questions about 2012 Subaru Exiga wheel hubs

What are the signs a 2012 Exiga wheel hub is failing?

Owners usually notice a humming or growling that rises with speed and changes when cornering. Play at the wheel, ABS/VDC warning lights, or heat at the hub after a drive are also red flags.

Left too long, a worn hub can cause uneven tyre wear and vague steering feel, so a prompt inspection is worthwhile.

Is the Exiga’s bearing serviceable, or is it a complete hub unit?

Most 2012 Exiga (YA series) models use a bolt-on hub unit bearing. It’s sealed, with the bearing and encoder integrated, so the normal fix is to replace the complete hub assembly rather than pressing in a separate bearing.

This approach speeds up the job and ensures correct preload and sealing.

How long do wheel hubs last, and can they be maintained?

They’re sealed-for-life, so there’s no greasing or adjustment. Lifespan varies widely—many run well past 150,000 km, but impacts, water intrusion, or poor torque practices can shorten that.

Regular checks for noise and play during service, correct axle nut torque, and avoiding kerb strikes help them go the distance.