Parts for your 2005 Toyota Ist-Thrust bearing

2005 Toyota ist thrust-bearing: what it does, where it lives, and how to look after it

Drawing on Toyota’s NCP60-series ist Repair Manual and Electronic Parts Catalogue, plus Aisin gearbox documentation, a thrust-bearing is indeed relevant to the 2005 Toyota ist. Every 1NZ‑FE/2NZ‑FE engine in this model uses a crankshaft thrust bearing integrated into the main bearing set to control end float. On manual-transmission variants (C50/C54 family), there’s also a clutch release (thrust) bearing. Automatic/CVT models (e.g., U340E) don’t have a clutch release bearing, but still rely on the engine’s crankshaft thrust bearing.

For owners and workshops, the thrust-bearing story splits in two. First up, the engine’s crankshaft thrust bearing. Its job is to keep the crankshaft from shuffling forward and back under clutch and accessory loads, maintaining correct alignment of the crank, pistons, and timing gear. When healthy, it keeps end float within Toyota’s spec and the engine runs sweet as. There’s no regular “service” for this bearing, it’s an inspect-and-measure item during engine work. Good oil, proper change intervals, and not riding the clutch (on manuals) all help it last the distance. Red flags include metallic glitter in the oil, visible fore–aft movement at the crank pulley, or an odd change in idle when the clutch is pressed on a manual.

Then there’s the clutch release (thrust) bearing on manual ist models. It’s the bearing that presses on the pressure plate diaphragm when the clutch pedal’s down, letting the clutch disengage smoothly. It tends to wear with clutch use, so it’s best practice to replace it with the clutch kit (disc and pressure plate) during a clutch job. Many cars see 120–200,000 km before clutch replacement, but stop–start city driving or riding the pedal can bring that forward. Signs the release bearing’s on the way out include a whirring or chirping noise with the pedal depressed, notchiness in shifts, or vibration through the pedal. If it’s noisy, don’t ignore it—left too long, heat and roughness can mark the pressure plate fingers.

For servicing a 2005 ist, workshops will:

• Manuals: replace the release bearing whenever the clutch is changed, check clutch pedal free play and cable/hydraulics as applicable.
• All engines: stick to quality oil and intervals, if the sump is off or the engine is open, measure crankshaft end float and compare to the repair manual spec.

Look after these bearings and the little Toyota will stay tidy and trouble-free for years.

Popular questions

Does every 2005 Toyota ist have a thrust-bearing?
Yes—every engine has a crankshaft thrust bearing. Only manual models add a clutch release (thrust) bearing. Automatics/CVTs don’t have the clutch release bearing but still rely on the engine’s thrust bearing to control crank end float.

How long does a clutch release thrust-bearing last on a 2005 ist?
It typically lasts as long as the clutch. Many see 120–200,000 km, but heavy traffic, riding the pedal, or performance driving can shorten that. Replace it whenever the clutch is replaced to avoid doubling up on labour.

Can a worn thrust-bearing cause bigger damage?
A crook release bearing can chew up the pressure plate fingers and cause poor disengagement. A severely worn engine thrust bearing can let the crank walk, risking contact that accelerates main bearing and thrust face wear. If symptoms show, get it checked promptly.