Parts for your 2011 Subaru Legacy-Thrust bearing

2011 Subaru Legacy thrust-bearing: what it does and when to service it

Based on the Subaru Factory Service Manual for 2010–2012 Legacy/Outback (BR/BM), the Subaru Technical Information System (STIS), and Subaru parts catalogues for EJ25/EZ36/EE20 engines, the 2011 Subaru Legacy is fitted with a crankshaft main thrust bearing. On manual-trans models there’s also a clutch release (thrust) bearing. So yes—“thrust-bearing” is absolutely relevant to this model.

In the engine, the thrust bearing is built into one of the main bearings (the thrust faces control end-float of the crankshaft). It takes axial loads when the clutch is pressed on manual cars and during converter or pump loading on autos/CVTs. Its job is to keep the crank from walking fore and aft, protecting the oil pump, timing gear alignment and block saddles. Healthy thrust surfaces mean smooth gear changes, consistent idle, and longer bottom-end life.

The engine’s thrust bearing is internal and not a routine service item. It’s inspected any time the engine is apart and replaced during a rebuild if wear is out of spec. Warning signs can include a light knock that changes when the clutch is depressed, visible in–out movement of the crank pulley, clutch pedal engagement suddenly shifting, or excessive end-float measured with a dial indicator. If those show up, it’s best to stop driving and get a proper diagnosis—continuing can damage the block.

For 6‑speed manual models, the clutch release (thrust) bearing is a normal wear item. If there’s a chirp or whirring that appears with the clutch pedal pressed and disappears when released, the release bearing is likely tired. Best practice is to replace it whenever a clutch kit is fitted, lightly lube the fork pivot and contact points with the correct high-temp grease, and check the slave/line operation so the new bearing isn’t overworked.

Autos and CVTs don’t have a clutch release bearing, but the engine thrust bearing still does the heavy lifting. Sensible habits help: don’t ride the clutch on manuals, maintain correct ATF/CVTF on autos, and avoid leaning on the clutch pedal at lights. If the engine’s out for any reason, a quick end-float check and inspection of the thrust faces is cheap insurance.

• Replace the clutch release bearing with every clutch job (manuals).
• Check engine crank end-float during rebuilds or bottom-end work.
• Investigate any new clutch-pedal noise or feel changes promptly.

Popular questions

Does a 2011 Subaru Legacy actually have a thrust bearing?
Yes. All 2011 Legacy engines use a crankshaft thrust bearing to control axial movement. If the car has a manual gearbox, it also uses a clutch release (thrust) bearing that’s serviced with the clutch.

What are the symptoms of a worn thrust bearing on a 2011 Legacy?
Engine thrust wear can show up as a knock or scrape that changes when the clutch is pressed, inconsistent idle, or noticeable crank pulley end-play. A failing clutch release bearing typically whirrs or chirps with the pedal depressed and quietens when released.

When should the thrust bearing be replaced?
The engine thrust bearing is replaced during an engine rebuild or when end-float is out of spec. The clutch release bearing should be replaced any time the clutch is renewed, or sooner if noise and roughness are present.