Parts for your 2000 Subaru Legacy-Thrust bearing

2000 Subaru Legacy Thrust Bearing — What It Does and When to Service It

Yes, a thrust bearing is fitted to the 2000 Subaru Legacy. Technical references including the Subaru Factory Service Manual for the BE/BH series (2000 model year, EJ25 SOHC engine section) and Subaru’s electronic parts catalogue confirm the crankshaft uses an integrated thrust bearing at one of the main bearing positions (EJ Phase 2 engines place thrust at the rear main). Aftermarket catalogues from major bearing suppliers for EJ25 engines also list a dedicated thrust shell within the main bearing set. So the thrust bearing is very much relevant to this model.

The thrust bearing’s job is to control crankshaft end-float (fore–aft movement) under axial loads. On a manual Legacy, every time the clutch is pressed, axial load is pushed through the crank. On automatics, converter and pump loads do similar work. The thrust bearing provides a low-friction face for these loads, keeping the crank running true so the oil pump gears, timing gear, and seals aren’t stressed.

When it wears out, end-float increases, which can cause oiling issues, a change in clutch engagement feel, or even contact between rotating parts that should never meet. Left too long, it risks crankshaft and block damage.

• Typical signs include a dull knock at idle that changes when the clutch is pressed, visible in–out movement at the crank pulley, metallic glitter in the oil, or odd stalling/downshift behaviour when the pedal is held in.
• A dial indicator check of crank end-play during servicing is the proper test, compare to the factory spec and service limit in the FSM.

Replacement is a precision job: engine out, short block apart, crank inspected and measured. The main bearings are replaced as a set, with the correct-grade thrust shell selected for proper clearance. If the crank’s thrust face is scored, it’ll need polishing or grinding by a machine shop, and clearances re-measured. Fresh quality oil, correct viscosity for local climate, and proper clutch pedal free play (don’t ride the clutch at the lights) all help the thrust bearing live a long, quiet life.

For automatics, ensure the torque converter is fully seated during transmission refit to avoid undue thrust load on first start. For manuals, a smooth-operating clutch release system (cable/hydraulic components and the release bearing) reduces shock loads into the crank.

• Popular questions about the 2000 Subaru Legacy thrust bearing

Does the 2000 Subaru Legacy actually have a crankshaft thrust bearing?

It does. Subaru’s 2000 Legacy service manual and parts catalogue show an integrated thrust bearing within the main bearing set on EJ25 engines, positioned at the rear main location on Phase 2 blocks. That bearing controls crankshaft end-float under clutch and driveline loads.

What symptoms point to a worn thrust bearing on an EJ25?

Look for a faint knock at idle that changes when the clutch is pressed, noticeable forward–back movement of the crank pulley, metallic flakes in oil, or a clutch engagement that suddenly feels inconsistent. A proper end-float check with a dial indicator confirms the diagnosis against the FSM spec.

Can the thrust bearing be replaced with the engine in the car?

No. It’s part of the main bearing set, so the engine must come out and the short block must be disassembled. The crankshaft thrust face is inspected and clearances are set with new bearings. Many workshops pair this with a full bottom-end refresh if kilometres are high.