Parts for your 2006 Subaru Impreza-Thrust bearing

2006 Subaru Impreza thrust bearing — fitment, purpose and service advice

Based on technical sources — the 2006 Subaru Impreza Factory Service Manual (Subaru Technical Information System, Clutch System section) and the Subaru Electronic Parts Catalogue (FAST/EPC) — a thrust bearing is fitted on manual‑transmission 2006 Impreza models as the clutch release (throw‑out) bearing. The engine also uses a crankshaft main thrust bearing within the block. Automatic models do not use a clutch thrust/release bearing.

The thrust bearing on a manual 2006 Subaru Impreza is the clutch release bearing that presses on the pressure plate’s diaphragm springs when the pedal is pushed. Its job is simple but crucial: provide a smooth, low‑friction interface so the clutch can disengage cleanly without graunching or drag. Subaru’s service literature specifies it as a non‑scheduled item — it isn’t replaced by time or kilometres — but it’s commonly renewed whenever the clutch is out, because the gearbox has to come off to reach it.

When it starts to go off, owners usually notice a chirp, squeal, or rumbling with the clutch pedal depressed. If the noise disappears when the pedal is released, that strongly points to the release (thrust) bearing rather than the gearbox input shaft bearing. Left to worsen, it can make engagement rough or inconsistent.

Best practice during clutch work on an Impreza manual includes:

• Replace the thrust bearing with a quality unit whenever the clutch disc/pressure plate is renewed.
• Lightly lubricate the release fork pivot, bearing ears and contact points with the specified high‑temp moly grease, keep grease away from the friction surfaces.
• Inspect the input shaft guide tube/snout for wear and repair or sleeve if scored, check the fork clip and slave operation.
• Confirm smooth sliding of the bearing on the guide, correct clutch alignment, and torque fasteners to the FSM spec.

There’s no routine maintenance beyond listening for noise and ensuring the hydraulic system (where fitted) is bled and leak‑free. Many clutches last 150,000–200,000 km in mixed driving, so the thrust bearing typically follows the same replacement timing. For vehicles with the 4EAT automatic, a clutch thrust bearing isn’t present, any drivetrain noise under load there should be diagnosed as transmission or torque converter related. Technical confirmation of fitment and procedures can be found in the 2006 Impreza FSM (Clutch section) and in the Subaru FAST parts listings for the clutch release bearing.

Popular questions about 2006 Subaru Impreza thrust bearings

Does every 2006 Impreza have a thrust bearing?
Manual models do — it’s the clutch release bearing. Automatic (4EAT) models don’t have a clutch thrust/release bearing, though all engines have an internal crankshaft thrust bearing that isn’t serviced during clutch work.

What are the classic symptoms of a failing thrust (release) bearing?
Noise when the clutch pedal is depressed: chirping, squealing, or a rough rumble that fades when the pedal is released. Engagement may feel notchy. If the noise occurs with the pedal up, consider gearbox input shaft bearings instead.

Should the thrust bearing be replaced on its own?
It can be, but labour overlaps a full clutch job. Most workshops recommend replacing the clutch disc, pressure plate, release (thrust) bearing, and pilot bearing/bush together to avoid paying for gearbox removal twice.