Parts for your 2008 Toyota Bb-Thrust bearing

2008 Toyota bB Thrust Bearing – Is It Used on This Model?

Shoppers chasing a “thrust bearing” for a 2008 Toyota bB will want to know if that part actually exists on this model as a routine service item. Based on Toyota’s technical documentation, it doesn’t, at least not in the sense of a clutch release/thrust bearing. The Toyota Electronic Parts Catalog (EPC) for the QNC20/QNC21 bB lists the vehicle with an automatic transaxle from factory and shows no manual clutch components, so there’s no clutch release (thrust) bearing fitted. Toyota’s service literature for the QNC2# series also details automatic transmission servicing only, reinforcing that there’s no external clutch or throwout assembly to maintain.

Why that matters: a clutch “thrust” (release) bearing is a manual-transmission part used to disengage the clutch when the pedal’s pressed. The 2008 bB runs a torque converter automatic, so it doesn’t need that bearing at all. That’s why you won’t find a genuine or aftermarket clutch thrust-bearing listed for this exact year and model.

There are, however, a couple of similarly named components owners sometimes mean when they say “thrust bearing”:

• Engine crankshaft thrust washers/bearing surfaces: Found inside the engine (1NZ-FE/2SZ-FE), these control crank end-float. They’re internal parts, replaced only during an engine rebuild or major repair—not routine servicing items.
• Front strut top support bearing (often called a strut “thrust” bearing): This sits in the strut mount and lets the strut rotate smoothly when steering. It is a serviceable part and can cause notchy steering or clunks when worn.

So, for a 2008 Toyota bB, a clutch-style thrust bearing isn’t relevant. If the goal is to sort a steering grind or a spring twang at low speeds, what’s actually needed is the front strut mount bearing. If the concern is engine end-float or a rumble from deep in the block, that’s an internal main/thrust bearing issue and calls for diagnostic checks before any repair planning.

Technical basis: Toyota’s EPC listings for QNC2# bB show automatic transaxle only with no clutch release bearing components, and Toyota service manuals for this series outline A/T procedures, not clutch service—confirming no fitment of a clutch thrust/release bearing on the 2008 bB.

FAQs

Does a 2008 Toyota bB have a clutch thrust/release bearing?
No. The 2008 bB was supplied with an automatic transaxle, so there’s no manual clutch system and no release (thrust) bearing to service or replace. If someone’s listing one, it’s likely a catalogue mismatch with manual variants from other Toyota models.

Are there engine thrust bearings in a 2008 bB, and do they need servicing?
Yes, the engine uses thrust bearing surfaces as part of the main bearings to control crankshaft end-float. They’re internal components and aren’t serviced on their own during routine maintenance. They’re inspected and replaced only during an engine rebuild or when investigating specific symptoms like excessive crank movement.

Could “thrust bearing” mean the front strut top bearing on a bB?
Often, yes. Many drivers use “thrust bearing” to describe the strut mount bearing. If the steering feels notchy, makes a graunching sound at low speed, or there’s a clunk over bumps, the front strut top bearing or mount may be due. That part is serviceable and commonly replaced with the strut mount during suspension work.