Parts for your 2012 Subaru Impreza-Thrust bearing

2012 Subaru Impreza thrust-bearing — what’s fitted and what’s not

Based on Subaru technical references—the Subaru Factory Service Manual (FSM) for the 2012 Impreza (GJ/GP) clutch section, the FB20 engine mechanical section, and the Subaru FAST electronic parts catalogue—the 2012 Subaru Impreza does use a thrust-bearing in two contexts. First, manual-transmission models are fitted with a clutch release bearing (often called a thrust bearing or throw-out bearing) identified in the parts listings as the “release bearing (complete).” Second, the FB-series engine uses an integrated crankshaft thrust bearing within the main bearings to control end float, this is an internal engine component, not a routine service item. Impreza models equipped with the Lineartronic CVT do not have a clutch release/thrust bearing, as they don’t use a conventional manual clutch.

For owners of a 2012 Subaru Impreza with a manual gearbox, the clutch thrust/release bearing is the quiet achiever that lets the clutch disengage smoothly when the pedal’s pressed. It transfers the pedal force via the fork to the pressure plate’s diaphragm spring, allowing clean gear changes without graunching. When it’s healthy, it’s near silent, when it’s tired, it’ll make itself known.

Tell-tale signs include a chirp, squeal, or whirr that appears when the clutch pedal is pressed and disappears when it’s released, a notchy or gritty pedal feel, or shudder on take-up. Left to get worse, a failing bearing can mark the pressure plate fingers and lead to poor disengagement.

There’s no set maintenance interval for the release bearing—it’s a replace-on-condition item, typically done whenever the clutch is replaced. Best practice is to fit a complete clutch kit (pressure plate, friction disc, release bearing, and, where applicable, pilot bearing/bush) and inspect the fork, pivot, and guide tube for wear. A light smear of the correct high-temp moly grease on the fork contact points and guide is important, whilst keeping grease off the friction surfaces. Flywheel condition should be checked and machined or replaced as required.

Driving habits make a big difference. Resting a foot on the pedal, holding the car on the clutch at lights, or slipping the clutch on hills will shorten the bearing’s life. Aim for neutral at long stops and smooth, prompt take-up. If there’s noise that changes with pedal position, it’s worth booking an inspection sooner rather than later.

For CVT models, a clutch thrust/release bearing isn’t applicable. Any drivetrain noises should be diagnosed with the CVT and torque converter in mind, and fluid servicing should follow the FSM and local schedule.

• Applies: 2012 Impreza manual models (clutch release/thrust bearing fitted)
• Not applicable: 2012 Impreza CVT (no clutch release bearing)
• Engine note: FB20 crankshaft thrust bearing is internal and not a regular service item

Popular questions

Does a 2012 Subaru Impreza with CVT have a thrust bearing?
No, CVT-equipped cars don’t have a clutch release/thrust bearing because there’s no manual clutch. They do, however, still have an internal crankshaft thrust bearing inside the engine, which isn’t a routine service part.

What are the common symptoms of a failing clutch thrust/release bearing?
A chirping, squealing, or growling noise that appears when the clutch pedal is pressed and goes away when it’s released is the classic sign. Drivers may also feel a rough or notchy pedal, and sometimes experience shudder or poor disengagement if related parts are worn.

Should the release bearing be replaced every time the clutch is changed?
Yes—best practice is to replace the release bearing with every clutch job. It’s smart to fit a full kit, inspect the fork, pivot, and guide tube, and check the flywheel. Many workshops also check the rear main seal and the pilot bearing/bush while the gearbox is out.