Parts for your 2001 Toyota Bb-Thrust bearing

2001 Toyota bB thrust bearing — what’s fitted and how to look after it

Based on Toyota’s technical literature for the NCP30/NCP31 bB (1NZ‑FE/2NZ‑FE) and the Toyota Electronic Parts Catalogue, a clutch thrust bearing (Toyota calls it a clutch release bearing) is used only on 5‑speed manual transmission models (C5x series). Automatic models (commonly the 4‑speed Aisin U340E/Super ECT) don’t use a clutch thrust/release bearing because they employ a torque converter and no clutch fork or pressure plate. That’s why the part won’t appear under the automatic transmission section of the EPC, and the Toyota Repair Manual procedures for the auto show no release bearing. Note there is also an engine crankshaft thrust bearing integrated into the main bearings, but that’s a different component and not the “clutch thrust bearing” most owners are searching for.

Where a 2001 Toyota bB is fitted with the 5‑speed manual, the thrust (release) bearing plays a key role in smooth gear changes. It sits on the gearbox input shaft collar and, via the clutch fork and slave cylinder, presses on the clutch diaphragm spring to disengage drive when the pedal’s pushed. A healthy bearing keeps things quiet and slick, a worn one can squeal, rumble, or make the pedal feel gritty.

For servicing, the release bearing is normally replaced as part of a clutch kit. It’s a sealed unit, so there’s no routine lubrication or adjustment on the bearing itself. Best practice when the gearbox is out is to renew the bearing, pressure plate and friction disc together, and inspect related hardware: fork, pivot/ball, return spring, the input shaft guide tube, and (if applicable) the pilot bearing/bush. A light smear of high‑temp moly grease on the fork pivot and the bearing’s contact points is fine — never grease the bearing face or over‑grease the guide tube.

Typical signs it’s time to replace include:

• Whirring or chirping that changes when the clutch pedal is lightly pressed
• Notchy pedal feel or poor clutch disengagement
• Noise on take‑off that fades in higher gears

If any of those crop up, it’s wise to get onto it before damage spreads to the pressure plate or the input shaft collar. After installation, bleeding the hydraulic clutch (where fitted) and checking pedal free play/engagement point helps prevent premature wear. Quality aftermarket or genuine bearings both do the job, the main thing is correct fitment and keeping contaminants away during assembly.

Intervals vary with driving style — lots of stop‑start or riding the clutch will shorten life. Many owners simply wait until the clutch is due, but if the bearing is noisy now, replacing it early can save a second gearbox-out later. All of this aligns with Toyota’s Repair Manual guidance for clutch overhauls on the bB’s C5x manual and the EPC’s parts breakdown that lists the release bearing alongside the clutch cover and disc for manual models only.

Popular questions

Does a 2001 Toyota bB have a thrust bearing?

Manual models do — it’s the clutch release bearing. Automatic models don’t, because they use a torque converter. There is also an engine crankshaft thrust bearing, but that’s unrelated to the clutch and isn’t a routine service item.

When should the thrust (release) bearing be replaced on a bB?

Commonly when doing a full clutch replacement, or earlier if it’s noisy or the pedal feels rough. If it whirrs or chirps with light pedal pressure, plan for a bearing (and likely full clutch) soon to avoid doubling up on labour.

Can a noisy thrust bearing damage other parts?

Left too long, it can mark the pressure plate fingers, wear the fork pivot, and score the input shaft guide tube. Sorting it promptly helps protect the rest of the clutch and keeps shifts smooth.