Parts for your 2022 Subaru Impreza-Wheel hubs

2022 Subaru Impreza wheel hubs — what they do, and when to service or replace them

Technical sources for the 2022 Subaru Impreza — notably the Subaru 2022MY Impreza Service Manual (Chassis: Front/Rear Axle, Wheel Hub Unit Bearing) and Subaru Genuine Parts Catalog for the GK/GT generation — confirm the car uses bolt‑on, unitised wheel hub and bearing assemblies front and rear. So yes, wheel hubs are absolutely relevant and fitted to the 2022 Subaru Impreza.

On this model, each hub unit sits between the knuckle and the wheel, supporting the vehicle’s weight, providing a mounting face for the brake rotor and wheel, and allowing smooth rotation via a sealed bearing. The hubs also interface with the ABS/Vehicle Dynamics Control via an encoder and sensor, which is why a failing hub can trigger an ABS light as well as a droning noise. Being a Subaru with Symmetrical AWD, the hubs cop both radial loads and axle drive loads, so keeping them in good nick is key for quiet running and predictable handling.

As part of regular servicing, a workshop should check for play at 12 and 6 o’clock, listen for rumbling on road test, scan for ABS faults, and inspect for heat discolouration or corrosion around the hub face. There’s no periodic greasing on these sealed units, so the focus is on inspection, correct wheel and axle‑nut torque, and clean mounting surfaces.

• Common symptoms: a speed‑dependent hum that changes when gently swerving, ABS/VDC warnings, uneven tyre wear, or noticeable wheel play.
• Good practices: torque wheels by hand to spec, avoid impact guns on axle nuts, keep pressure washers away from hub seals, and clean rust from the hub/rotor/wheel mating faces.
• Replacement tips (shop level): replace the unit as an assembly, renew the axle nut and mounting bolts where specified, clean the knuckle bore, align the ABS sensor and harness carefully, and always use factory torque specs from the Subaru manual.

There’s no fixed kilometre interval for replacement — these hubs are designed to last many years — but high‑km cars, frequent gravel use, deep water crossings, or wheel impacts can shorten bearing life. If the car starts to drone, the steering feels rough, or there’s play in a corner, book it in promptly, driving on a failing hub can cook the bearing, upset ABS readings, and chew out tyres. Quality OE‑equivalent hub units fit straight up on the Impreza, keeping the ride quiet and the AWD happy.

Popular questions about 2022 Subaru Impreza wheel hubs

Are front and rear wheel hubs the same on a 2022 Subaru Impreza?

No — front and rear hub units differ in design and part specification, so they’re not interchangeable. The mounting pattern, sensor arrangement, and load paths vary between axles.

When ordering, match by VIN and axle position. Using the correct unit ensures proper ABS operation and correct fit to the knuckle and driveshaft.

What are the tell‑tale signs a hub is failing on this model?

Most owners notice a steady hum or growl that rises with speed and often changes when gently loading the car left or right. There may also be a faint vibration through the seat or steering.

Other clues include an ABS/VDC light, heat at the wheel after a drive, or detectable play when rocking the wheel at 12 and 6 o’clock. Any of these warrant a professional inspection.

How often should the wheel hubs be checked on a 2022 Impreza?

Have them checked at each routine service or tyre rotation. A quick spin test, play check, and scan for ABS faults takes minutes and can prevent bigger dramas down the track.

If the car does lots of rough‑road or wet work, ask the workshop to pay extra attention to the hubs and wheel fastener torque to keep the bearings happy.