Parts for your 2013 Toyota Mark x-Thrust bearing

2013 Toyota Mark X thrust-bearing — what it is, and when to worry about it

Checking the tech on the GRX130-series Mark X (2013), including Toyota’s GR-series Engine Repair Manual and the Toyota Electronic Parts Catalogue, confirms the vehicle is fitted with a crankshaft thrust bearing (thrust faces integrated into the main bearing set) for both the 4GR‑FSE 2.5L and 2GR‑FSE 3.5L V6 engines. The 2013 Mark X was sold with an Aisin 6‑speed automatic (A960E family), so there’s no manual clutch release “thrust” bearing in the driveline. That means the relevant thrust-bearing on this model lives in the engine, not the gearbox or clutch.

Purpose-wise, the engine’s thrust-bearing controls the crankshaft’s endfloat (axial movement). It takes the fore‑and‑aft loads from the torque converter, accessory belt pull, and changes in engine load, keeping the crank where it should be so the oil pump, timing gear, and sensors all stay happy. When it’s healthy, you get smooth idle, consistent shift feel, and long-lived bottom-end bearings.

Is it a regular service item? Not really. Toyota’s service literature treats thrust-bearing inspection and replacement as an engine overhaul task, not routine maintenance. That said, smart servicing helps it live a long life: fresh oil at the recommended viscosity, quality filters, and proper transmission installation practices (never forcing the converter onto the flexplate, always confirming converter depth and engagement) to avoid axial overload.

Drivers and techs can keep an ear out for the tells of excess endfloat: a dull knock at idle that changes when selecting Drive, visible fore‑aft movement of the crank pulley, intermittent flexplate noises, or odd shift harshness after trans work. If those crop up, a dial gauge endfloat check during workshop diagnosis is the go. If wear is confirmed, the fix involves sump and bed‑plate/main-cap removal, crankshaft inspection, and fitting the correct-grade main bearings with thrust faces, then re‑measuring endfloat to spec.

• Best practice during engine or trans work: align the torque converter correctly, torque fasteners in sequence, and use assembly lube on bearing faces.
• For longevity: stick to factory oil specs, avoid extended low‑oil situations, and address front-end accessory drag (e.g., seized A/C compressor) promptly.

Bottom line for the 2013 Toyota Mark X: yes, it has an engine thrust-bearing, but it’s not a day‑to‑day service part. Treat the oiling system and transmission installation by the book, and it should be a set‑and‑forget component well past high kilometres.

Popular questions

Does the 2013 Toyota Mark X have a clutch release (throwout) thrust-bearing?

No. The 2013 Mark X runs an Aisin 6‑speed automatic, so there’s no manual clutch or throwout bearing. The only “thrust-bearing” you’ll deal with is the engine’s crankshaft thrust bearing integrated into the main bearings.

What symptoms point to a worn thrust-bearing on a Mark X?

Look for a knock at idle that changes when shifting into Drive, visible crank pulley fore‑aft movement, flexplate noises, or odd shift feel after transmission work. A workshop can confirm with a crank endfloat measurement.

Should the thrust-bearing be replaced during routine servicing?

Not during normal services. It’s checked and replaced only during engine repair or overhaul when measurements show excess endfloat or bearing face wear. Regular oil changes and correct transmission fitment practices help prevent issues.