Parts for your 2010 Subaru Impreza-Wheel hubs

2010 Subaru Impreza wheel hubs — what they do and how to look after them

Wheel hubs are absolutely fitted to the 2010 Subaru Impreza. This is confirmed in Subaru’s 2010 Impreza Factory Service Manual (Front Axle and Rear Axle sections) and the Subaru Electronic Parts Catalogue (GE/GH/GR chassis), which list bolt-in hub unit bearings at each corner. The EPC groups for these assemblies include front hub unit bearings (group 28373) and rear hub unit bearings (group 28473), supplied as complete assemblies with wheel studs. That makes wheel hubs a core, relevant component on any 2010 Subaru Impreza model.

On the 2010 Impreza, the wheel hub unit does the heavy lifting: it locates the wheel, lets it spin smoothly on a sealed bearing, holds the wheel studs for the nuts, and mates to the CV axle or rear drive flange. Many variants also integrate an ABS encoder for the wheel speed sensor. Because the bearing is sealed-for-life, there’s no greasing or adjustment—if it’s noisy or loose, the whole hub assembly gets replaced.

What does trouble look like? Drivers often notice a humming or growling that gets louder with road speed, a droning that changes when gently turning, a bit of steering shimmy, uneven tyre wear, or an ABS light if the encoder signal goes missing. Any noticeable play when rocking the wheel at 12 and 6 o’clock is a red flag.

Replacement is straightforward for a trained tech: the hub unit bolts to the knuckle, and the axle nut and brake hardware come off for access. Best practice on a 2010 Subaru Impreza wheel hub swap includes:

• Using quality OEM or reputable aftermarket hub units matched to the VIN (some trims vary).
• Cleaning the knuckle’s mating face so the new hub sits flat—no wobble, no runout.
• Replacing the axle nut and torquing all fasteners to the Subaru FSM specs with a calibrated torque wrench.
• Inspecting the wheel speed sensor and wiring, avoid knocking or contaminating the magnetic encoder.
• Spinning the hub to confirm it’s smooth and quiet before refitting the rotor and wheel.

There’s no set kilometre interval—these hubs are replaced on condition. If the car sees rough roads, frequent water crossings, or big wheels and tyres, expect earlier wear. After fitting, a quick road test and, if braking or tyre wear was uneven, a wheel alignment check are smart moves. Keep tyres properly inflated and rotated, and the hub bearings generally live a long, quiet life.

Popular questions about 2010 Subaru Impreza wheel hubs

How long do the wheel hubs/bearings typically last?

On a well-maintained 2010 Impreza driven on normal roads, hub bearings often last 120,000–200,000 km or more. Rough surfaces, heavy loads, oversized wheels, and frequent water or mud exposure can shorten that. Replace on condition—noise, play, roughness, or ABS faults are the key signs.

Can the wheel hub bearing be serviced or greased?

No. The 2010 Subaru Impreza uses sealed hub unit bearings. They’re not adjustable and can’t be repacked. If a bearing is noisy or loose, the proper fix is replacing the entire hub assembly with a correct-spec unit and torquing it to the factory spec.

Do I need a wheel alignment after replacing a hub?

Often, no—replacing the hub doesn’t change alignment settings by itself. However, if the knuckle was disturbed, if there was uneven tyre wear before, or if you replaced related suspension parts, a post-repair alignment check is a good idea to keep tyres happy and the steering straight.