Parts for your 2013 Subaru Legacy-Thrust bearing

2013 Subaru Legacy thrust-bearing: what it is, and when to worry

Based on Subaru technical literature, a thrust-bearing is absolutely used on the 2013 Subaru Legacy. The Subaru Factory Service Manual for the 2013 Legacy/Outback (FB25 2.5L and EZ36 3.6L engine sections) identifies the crankshaft main bearing set as having an integrated thrust-bearing surface to control end float. Subaru’s electronic parts catalogue for the same models lists main bearing sets that include thrust pieces. On manual-transmission variants, there’s also a clutch release (often called “thrust”) bearing, CVT models don’t use that clutch release bearing, but still rely on the engine’s crankshaft thrust-bearing.

On this model, the thrust-bearing’s core job is to keep the crankshaft where it should be front-to-back, handling axial loads from the drive belt system, torque converter (CVT) or clutch actuation (manual), and general combustion forces that nudge the crank longitudinally. By controlling end float, it helps maintain consistent clutch engagement (manual), keeps the crank trigger wheel lined up for accurate timing, and prevents the rotating assembly from rubbing where it shouldn’t. It’s a quiet achiever that protects the engine over hundreds of thousands of kilometres.

Unlike a wheel bearing or accessory belt, the crankshaft thrust-bearing isn’t a routine service item. It’s assessed any time the engine is apart, or if there are tell-tale symptoms. For manual cars, a failing thrust-bearing can show up as a change in idle when the clutch is pressed, scraping or rumbling with the pedal down, or inconsistent clutch bite. On any engine, excessive metal in the oil, obvious crank pulley fore–aft movement, or unexplained timing correlation faults can prompt an end-float check. If the engine is out for a rebuild, competent shops will measure crankshaft end play and replace the main/thrust bearings as a set, match-grade the shells, verify oil clearances, and follow Subaru torque and cleanliness procedures.

Good habits help: avoid riding the clutch, keep engine oil fresh and the correct grade, and address any front-end accessory or flywheel/driveplate issues quickly. If the car is a manual and the gearbox is out for a clutch, it’s smart to replace the release (thrust) bearing at the same time with a quality unit and confirm the clutch fork and guide tube are clean and lightly lubricated with the specified product. For CVT models, focus stays on engine oil health and accurate diagnosis if axial movement or noise is suspected—there’s no standalone “thrust-bearing service”, but there is solid preventative care.

• Key signs to check: idle change with clutch in (manual), axial crank movement, metallic debris in oil, new scraping/rumbling noises, or timing correlation codes.
• Best practice: measure crank end float during engine work, replace main/thrust bearings as a matched set if out of spec.

Popular questions

Where is the thrust-bearing on a 2013 Subaru Legacy?
The thrust-bearing is part of the engine’s main bearing set, supporting the crankshaft and limiting its end float. It’s not visible externally, the crankcase must be opened to inspect or replace it. On manual cars there’s also a separate clutch release (thrust) bearing inside the bell housing, which is accessible when the gearbox is removed.

What are common symptoms of a worn thrust-bearing on this model?
For manuals, look for an idle drop or odd noise when the clutch pedal is pressed, a pedal feel that goes notchy, or inconsistent clutch engagement. For any engine, watch for metallic glitter in oil, unusual front pulley fore–aft movement, scraping from the lower front of the engine, or diagnostic timing correlation faults. Proper testing includes measuring crankshaft end float against the factory spec.

Do CVT versions have a clutch thrust-bearing?
No. CVT models don’t have a traditional clutch release bearing. They still rely on the engine’s internal crankshaft thrust-bearing, which manages axial loads, but there’s no separate clutch throw-out/thrust bearing to service on a CVT.