Parts for your 2012 Lexus Is-Thrust bearing

2012 Lexus IS thrust-bearing: what’s actually fitted and why it matters

Based on factory service information and the Lexus Electronic Parts Catalogue for the 2012 IS range (GSE2# and USE20 series), a standalone “thrust-bearing” isn’t a service item on Australian and New Zealand–delivered cars. The 2012 Lexus IS 250/350 models in this market were sold with automatic transmissions, and the IS F runs an 8‑speed auto. These autos use a torque converter and do not require a clutch release (thrust) bearing. The front suspension is double wishbone rather than MacPherson strut, so there’s no strut-top thrust bearing either. The only true thrust surfaces in the vehicle are the crankshaft thrust bearings integrated into the engine’s main bearing set, which are only addressed during engine overhaul, not routine servicing.

Why no thrust-bearing? In vehicles with a manual gearbox, the clutch release (often called a thrust or throwout bearing) manages axial load when the clutch pedal is pressed. With the IS running autos, that job simply doesn’t exist. Likewise, cars with MacPherson fronts need a strut-top bearing so the strut can rotate as you steer, the IS’s double-wishbone layout pivots on ball joints and control arms, so there’s no separate strut thrust bearing to replace.

What people often mean by “thrust-bearing” on a 2012 Lexus IS can be three different things:

• Clutch release/thrust bearing – not used on AU/NZ 2012 IS models because they’re automatic.
• Strut-top/thrust bearing – not used due to the double-wishbone front suspension.
• Engine crankshaft thrust bearing – present inside the main bearing set, only checked/measured during engine rebuild or if diagnosing abnormal crankshaft end float.

For owners, that means there’s no routine thrust-bearing maintenance to plan for on a 2012 IS. If there’s driveline noise at idle or when shifting gears in an auto, it’s far more likely to relate to mounts, the torque converter, or transmission internals rather than a clutch-type thrust bearing. If a technician suspects crankshaft end float, that’s an engine-internal measurement and not part of regular servicing—think rebuild-level work. Sticking with quality fluids, timely services, and proper suspension checks will go much further for long-term reliability on this platform.

FAQs

Does a 2012 Lexus IS have a clutch thrust (release) bearing?
For AU and NZ cars, no. The 2012 IS line-up was automatic, so there’s no manual clutch or release bearing to service. Only earlier or other-market manual variants used a clutch release bearing.

Is there a strut-top thrust bearing in the front suspension?
No. The 2012 IS uses a double-wishbone front end, which doesn’t require a strut-top bearing. Steering loads are handled by ball joints and control arms rather than a rotating strut mount.

Is any thrust bearing fitted in the engine?
Yes, the crankshaft uses thrust bearing surfaces as part of the main bearing set. They’re not a standalone service part and are only inspected during engine rebuilds or specific diagnostics for excessive end float.