Parts for your 2014 Toyota Bb-Centre bearing

2014 Toyota bB centre bearing — is it even a thing?

Short answer: a centre bearing isn’t used on the 2014 Toyota bB. This model (QNC2# series) runs a front‑engine, front‑wheel‑drive layout with a transaxle and a pair of front drive shafts, so there’s no long, two‑piece propeller shaft heading down the car that would need a centre support bearing.

That’s not just hearsay. Technical sources back it up: Toyota New Car Features for the bB QNC2# describes the vehicle as FF (front‑engine, front‑wheel drive) with no propeller shaft, the Toyota Electronic Parts Catalogue for QNC21 has no “Propeller Shaft” or “Centre Support Bearing” group at all, only “Front Drive Shaft” sections, and the Toyota Repair Manual for the bB’s Drivetrain/Axle coverage details front drive shafts, CV joints and wheel hubs, but no centre support bearing service procedures. By contrast, Toyota models that do use a centre bearing (think Hilux, HiAce, some AWD passenger cars) show a two‑piece tailshaft and a dedicated “Centre Support Bearing” in their manuals and EPC listings.

Why the bB doesn’t need one comes down to packaging. With power going only to the front wheels, the driveline is short and compact. There’s no rear diff and no need to split a long shaft into two sections, so there’s nothing for a centre support bearing to hold up. Some FWD cars use a right‑hand intermediate (carrier) bearing on a longer front shaft, on the bB, any such bearing is part of the front drive shaft assembly and bolts to the engine block, not the body, and it’s catalogued under “Front Drive Shaft” rather than as a prop‑shaft centre bearing.

If someone’s listed a “centre bearing” for a 2014 bB, it’s likely a catalogue cross‑over or a misunderstanding with that front intermediate shaft support. When servicing a bB that’s droning, clunking or vibrating, the smart checks are:

• Front CV joints/boots and front wheel bearings
• Tyre condition and balance (cupping and feathering can sound like a bearing)
• Engine and transaxle mounts, and the RH intermediate shaft support bearing if fitted

Technical references (no external links): Toyota New Car Features, bB QNC2# series (FF layout, no propeller shaft), Toyota Electronic Parts Catalogue, model QNC21 (no propeller shaft group, front drive shaft only), Toyota Repair Manual, Drivetrain/Axle for QNC2# (front drive shaft/CV service procedures, no centre support bearing section).

• Does a 2014 Toyota bB have a centre support bearing?
  No. The bB is front‑wheel drive and doesn’t use a two‑piece prop shaft, so there’s no centre support bearing in the driveline. Any “carrier bearing” references you see usually relate to the right‑hand front intermediate shaft support, which is a different part.

• What’s causing a highway hum if it’s not a centre bearing?
  Most commonly tyres (irregular wear), front wheel bearings, or front CV joints. Also check engine/trans mounts and the RH intermediate shaft support bearing if fitted. A quick rotation and road test often separates tyre noise from bearing noise.

• Can the bB’s front intermediate (carrier) bearing be replaced separately?
  On variants that use it, the support bearing is part of the right‑hand intermediate shaft assembly that bolts to the engine block. Replacement is straightforward with the right tools, but it’s catalogued under “Front Drive Shaft” rather than any “centre bearing” listing.