Parts for your 2015 Subaru Impreza-Thrust bearing

2015 Subaru Impreza thrust-bearing — what it does and when to service it

Based on Subaru technical literature for the 2015MY Impreza (FB-series 2.0L engine) and the OEM parts catalogue, a thrust bearing is absolutely used on this model. In the engine, the crankshaft thrust function is integrated into one of the main bearings to control end-float. On manual-transmission variants, there’s also a clutch release (often called “thrust”) bearing in the clutch assembly. CVT models don’t have a clutch thrust/release bearing, but they still rely on the engine’s crankshaft thrust bearing. These points align with the Subaru Service Manual engine mechanical section and standard bearing references from major suppliers used by Subaru.

What does it do? The engine’s thrust bearing manages axial loads on the crankshaft—things like clutch pedal force (manual) or converter load (CVT). Keeping the crank from walking protects the block, timing components, and transmission input gearset. For manuals, the clutch thrust/release bearing lets the pressure plate be disengaged smoothly, turning pedal movement into quiet, low-friction contact with the diaphragm spring.

There’s no set replacement interval for the engine thrust bearing, it’s inspected during engine repair or overhaul. Workshops check crankshaft end-float against Subaru specs with a dial indicator. If out of spec, they renew the main bearing set and confirm oil clearances. For the clutch thrust/release bearing on manual cars, best practice is to replace it whenever the clutch is done—parts are relatively inexpensive and labour overlaps the clutch job.

• Common signs to investigate:
  • Manual: whirring or squeal only when the clutch pedal is pressed (release/thrust bearing).
  • Engine: noticeable crank pulley fore–aft movement, erratic idle that changes when pressing the clutch, metal-on-metal feel under heavy clutch use.

Servicing tips for a 2015 Subaru Impreza:

• Manual models: fit a quality release (thrust) bearing with every clutch kit. Don’t reuse a noisy or rough unit.
• CVT models: no clutch thrust/release bearing to service, but if the engine is out for major work, check crank end-float and bearing condition.
• Any model: use the correct engine oil grade and change intervals—good oil film helps the thrust faces live a long life.
• If measuring end-float, follow the Subaru Service Manual procedure and limits for the FB engine.

With the right parts and procedure, the 2015 Subaru Impreza’s thrust-bearing systems are reliable and easy to manage as part of routine servicing or clutch work.

Does a 2015 Subaru Impreza have a thrust bearing?

Yes. Every 2015 Impreza has an engine crankshaft thrust bearing built into the main bearing set. Manual-transmission cars also have a clutch release (thrust) bearing. CVT models don’t use a clutch thrust/release bearing.

When should the thrust bearing be replaced on a 2015 Impreza?

The clutch release (thrust) bearing should be replaced whenever the clutch is replaced, or if it’s noisy when the pedal is pressed. The engine thrust bearing isn’t a routine service item, it’s checked during engine repair. If crankshaft end-float is out of spec, the main/thrust bearing is renewed and clearances are verified.

What noise points to a failing clutch thrust bearing?

Typically a whirring, growl, or chirp that appears only when the clutch pedal is depressed and disappears when released. If the noise is present with the pedal up and goes away when pressed, that usually points to an input shaft bearing, not the release/thrust bearing.