Parts for your 2014 Toyota Bb-Wheel hubs

2014 Toyota bB wheel hubs — what they do and how to look after them

Wheel hubs are absolutely used on the 2014 Toyota bB. That’s confirmed by Toyota’s Electronic Parts Catalogue for the QNC20/21 series and the factory workshop manual sections covering Front Axle/Hub and Rear Axle/Hub, which detail hub-and-bearing assemblies front and rear. Bearing suppliers’ data for Toyota compact platforms of this era also note unitised (sealed) double-row ball bearings integrated with the hub, including ABS encoder functionality.

On this model, the hub is the sturdy centre that the wheel bolts to. It carries the sealed bearing that lets the wheel spin smoothly, keeps brake rotors or drums running true, and, on ABS-equipped versions, houses the encoder ring the wheel-speed sensor reads. Up front it supports the drive axle and mates to the steering knuckle, at the rear it bolts to the axle beam assembly.

Because the hub bearing is sealed, there’s no greasing or adjustment on the bB—service is all about inspection and correct installation when replacement’s due. As part of regular servicing, it pays to:

• Road-test for a low hum or growl that rises with speed and may change when gently weaving at 60–100 km/h.
• Check for free play by rocking the wheel at 12 and 6 o’clock with the car safely lifted.
• Spin the wheel and feel for roughness, then look for uneven tyre wear or heat discolouration.
• Inspect ABS sensor wiring and keep the hub face clean and rust-free so rotors sit flat.

When replacement’s on the cards, using quality hubs that match the VIN and brake/ABS setup is the go. The front hub/bearing on the bB is a unitised design, depending on variant, service may involve pressing the bearing in the knuckle and refitting the hub flange, or swapping a complete bolt-on hub assembly. Either way, follow the Toyota workshop procedure, replace any single-use fasteners (including the axle/stake nut and circlips), and torque everything to spec. Keep magnets and metal filings away from the ABS encoder, and clean the hub face before the brake rotor goes back on to avoid runout and pedal pulsation.

A fresh hub should spin quietly with no play. After the job, a wheel alignment isn’t usually required unless suspension bolts were loosened, but it’s a smart time to check tyre condition and balance for the smoothest ride.

Popular questions about 2014 Toyota bB wheel hubs

Does the 2014 Toyota bB use hubs with ABS encoder rings?

Yes. The bB’s hub/bearing assemblies for ABS-equipped models include an integrated encoder ring that the wheel-speed sensor reads. When replacing, match the hub to the vehicle’s ABS spec and handle the new unit carefully—don’t contaminate the encoder with swarf or magnets, and seat the sensor squarely to maintain the correct gap.

How can someone tell a bB hub bearing is failing?

Classic signs are a speed-dependent hum or rumble that often gets louder when turning one way, slight steering vibration, an ABS light if the encoder signal goes noisy, or warmth at the hub after a drive. With the car safely lifted, any noticeable play at the wheel or a gritty feel when spinning points to a crook bearing.

Is a wheel alignment needed after hub replacement?

Not typically. Replacing a hub on the bB doesn’t change suspension geometry by itself. If the knuckle, strut, or tie-rod fasteners were loosened, book an alignment. It’s still a good opportunity to check toe and camber and make sure the tyres are wearing evenly.