Parts for your 2011 Toyota Bb-Centre bearing

2011 Toyota bB centre-bearing — is it even a thing?

Short answer: a centre-bearing isn’t fitted to the 2011 Toyota bB (QNC2# series), so it’s not a relevant service item for this model. The bB runs a transverse engine with a front‑wheel‑drive transaxle and a pair of CV half‑shafts, not a longitudinal tailshaft. Centre-bearings (also called centre support bearings) are designed to support a two‑piece propeller shaft in rear‑wheel‑drive or some all‑wheel‑drive layouts — a component the bB simply doesn’t have.

That conclusion lines up with technical sources: Toyota’s Electronic Parts Catalog for QNC20/QNC21/QNC25 lists no “propeller shaft” or “centre support bearing” assemblies for the model, only front drive shafts and CV joints, the Toyota service manual coverage for the bB focuses on the front transaxle and half‑shafts rather than any tailshaft hardware, and bearing manufacturers’ technical notes (e.g., SKF/NTN) define centre support bearings specifically for multi‑piece prop shafts, not for front drive axles. Put together, that’s a clear signal the part isn’t used on this vehicle.

Why it isn’t used comes down to drivetrain layout. The bB’s packaging is pure FWD: power leaves the transaxle’s differential straight out to short left and right CV axles, so there’s no long, spinning prop shaft running down the centre of the car that would require a mid‑span support. Some larger FWD platforms add an intermediate (jack) shaft with a carrier bearing on the passenger side to equalise axle lengths, but the bB’s platform does not employ a tailshaft-style centre-bearing — and parts lookups for “centre-bearing” on this model won’t return anything meaningful.

If a driver is chasing noises or vibration and thought it might be a centre-bearing, it’s smarter to look at components the bB actually uses:

• Front CV joints and boots for splits, grease loss, and play
• Wheel bearings for hums that rise with road speed
• Engine and trans mounts for excess movement under load
• On vehicles equipped with an intermediate right-hand shaft, the carrier/support bearing on that shaft (often serviced as part of the shaft assembly)

Bottom line: a “centre-bearing” isn’t part of servicing a 2011 Toyota bB. Target inspection time and budget at the front driveline and suspension items that actually wear and make noise on this platform.

• Does a 2011 Toyota bB have a centre-bearing?
  It doesn’t. The bB is a front‑wheel‑drive car with no multi‑piece tailshaft, so there’s no centre support bearing in the driveline. Any catalogue search for a “centre-bearing” on this model will typically show no applicable part.
• What could cause a droning noise if it isn’t a centre-bearing?
  On a bB, droning that follows road speed is more often a front wheel bearing. Clicking on turns points to an outer CV joint, while vibration under load can be an inner CV joint or a worn engine/trans mount.
• Is there any bearing like a centre-bearing on the bB?
  Some FWD cars use a right‑hand intermediate shaft with a support bearing. Depending on variant, the bB may use a simple long RH driveshaft instead. If fitted, that support bearing is typically serviced with the shaft assembly rather than as a separate “centre-bearing”.