Parts for your 2009 Mazda 6-Thrust bearing

2009 Mazda 6 thrust-bearing — purpose, service, and replacement

Technical sources confirm the 2009 Mazda 6 does use thrust bearings. The Mazda GH Workshop Manual for the 2.5L L5-VE notes a crankshaft thrust bearing integrated into the main bearing set, controlling crank end-float. The Clutch System section for the 6‑speed manual shows a clutch release (often called a thrust or throwout) bearing. The Front Suspension chapter specifies a MacPherson strut top mount with an integrated thrust bearing to allow smooth steering rotation. Independent references such as Autodata and Haynes for the GH platform echo these inclusions across both I4 and V6 models.

On the engine side, the thrust bearing’s job is to manage axial loads on the crankshaft—things like clutch actuation (manuals) and driveline or accessory loads—so the crank can’t shuffle fore and aft. Keeping end-float in check helps protect the crank, bearings, timing components, and the transmission input.

Manual-trans models also run a clutch release (thrust) bearing. It rides the gearbox input sleeve and presses on the clutch diaphragm when the pedal’s pushed, transferring pedal effort smoothly to disengage the clutch. It’s a sealed, lubricated-for-life part, there’s no scheduled maintenance. Best practice is to replace it whenever the clutch is replaced, because labour to reach it is the same.

• Replace the release bearing with the clutch kit, or sooner if it squeals, rattles, or feels rough when the pedal is pressed.
• Inspect the fork, pivot/ball, input shaft sleeve, and the slave cylinder (and hydraulic hose). Replace or service as needed.
• Bleed the clutch hydraulics after refit, and road-test for quiet, smooth engagement.

Up front, the strut top thrust bearings let the struts turn freely as they steer. If steering gets notchy, the wheel “springs” back in small steps, or there’s a clunk over low-speed bumps, the top mounts/bearings are likely due. Replace in pairs and book a wheel alignment.

Automatic-trans models don’t use an external clutch release bearing, but they still rely on the engine’s crankshaft thrust bearing. While it’s not a regular service item, mechanics will check for abnormal end-float or noises during major engine or transmission work, using the specs in the Mazda workshop manual.

Does a 2009 Mazda 6 have a thrust bearing?

Yes. Every engine variant has a crankshaft thrust bearing, manuals have a clutch release (thrust) bearing, and the front suspension uses strut top thrust bearings for steering.

What are common signs a thrust/release bearing is failing?

For the clutch release bearing: squeal or growl with the pedal depressed, vibration felt through the pedal, or rough engagement. For strut top bearings: notchy or heavy steering and a clunk when turning at low speed. Engine thrust bearing concerns are rarer and usually present as end-float knock or shifting idle/drive noises under clutch or gear changes.

Should the release bearing be replaced with the clutch?

Absolutely. It’s standard to fit a full clutch kit—disc, pressure plate, release bearing, and often the pilot bearing. The extra part cost is minor compared with the labour to pull the gearbox again.