Parts for your 2006 Subaru Impreza-Wheel hubs

2006 Subaru Impreza wheel hubs — what they do and how to look after them

Wheel hubs are absolutely fitted to the 2006 Subaru Impreza. This is confirmed by the Subaru Factory Service Manual for the 2006 Impreza/WRX (front and rear hub/bearing procedures), Subaru’s OEM parts catalogue listings for front and rear hubs and bearings, and Subaru’s technical bulletin history on Impreza wheel bearings (e.g., service bulletin notes covering updated rear bearing designs on 2000s-era Imprezas). So yes — the Impreza relies on wheel hubs as a core piece of the suspension and driveline.

On the 2006 Impreza, the wheel hub supports the brake rotor and wheel, carries the wheel studs, and transfers torque from the driveshaft via the splines. It spins on a press-in wheel bearing inside the knuckle on most trims of this model year. The hub also interfaces with the ABS sensor via a tone ring or encoder, so a worn hub/bearing can throw an ABS light as well as make a racket.

As part of regular servicing, it pays to keep an ear out for a low growl or humming that changes with road speed, a faint grind when cornering, or a steering wheel shimmy. Jacking each corner and checking for play at 12-and-6 o’clock is a quick driveway test. If there’s movement, roughness when the wheel is spun, or heat discolouration around the hub, it’s time for attention.

Replacement on this generation typically involves pressing the old bearing out of the knuckle and pressing in a new bearing, then refitting or replacing the hub if it’s scored or pitted. Many techs replace the hub along with the bearing if there’s any doubt. Following the Subaru manual matters — correct press tools, keeping load on the outer race when pressing, setting the axle nut to the specified torque, and rechecking ABS sensor clearances will save headaches. If the axle nut’s been hammered with a rattle gun or the torque’s off, premature bearing wear is almost a given.

For longer life in Aussie and Kiwi conditions, rinse road salt and coastal grime off the underbody, avoid pressure-washing directly into the hub area, and make sure tyres are balanced and aligned so the hubs and bearings aren’t copping extra stress. Quality bearings, a true hub face, clean mating surfaces, and the right torque specs will keep the 2006 Subaru Impreza rolling quietly for many more kilometres.

• Typical symptoms of a crook hub/bearing: humming with speed, ABS light, wheel play, uneven brake pad wear.
• Workshop must-dos: press bearings square, protect seals, torque the axle nut to spec, verify ABS operation.
• Good practice: replace damaged studs, clean rotor/hub faces, and road test for noise after tyre rotation.

Popular question: How long do 2006 Subaru Impreza wheel hubs and bearings usually last?

With quality parts and correct torque on the axle nut, many see 120,000–200,000 km or more. Harsh roads, curb hits, oversized wheels, and water intrusion can shorten that. If one side fails from age, the other side often isn’t far behind.

Popular question: Can a bad wheel hub cause an ABS light on a 2006 Impreza?

Yes. Excess play or a rough hub/bearing can upset the ABS sensor’s signal from the tone ring/encoder, triggering a fault. After replacement, make sure the sensor is clean, seated, and the air gap meets spec before chasing wiring gremlins.

Popular question: Do I need an alignment after hub or bearing work?

An alignment isn’t always mandatory, but it’s a smart move. Any time the knuckle, strut bolts, or control arm hardware are disturbed, alignment can shift. A quick check helps protect tyres and handling.