Parts for your 2004 Mazda Premacy-Thrust bearing

2004 Mazda Premacy Thrust Bearing — What It Is and When to Sort It

Yes, a thrust bearing is relevant on the 2004 Mazda Premacy. Technical sources including the Mazda Premacy (CP) Workshop Manual for the clutch system, the Mazda FS/FP engine workshop manuals (showing crankshaft thrust bearing built into the main bearings), and major parts catalogues from clutch manufacturers such as Exedy, NSK and LUK confirm two uses: a clutch release thrust bearing on manual-transmission models, and an engine crankshaft thrust bearing inside the block. For regular servicing, the part most owners deal with is the clutch release thrust bearing on manual Premacy variants.

On the manual 2004 Premacy, the thrust bearing (often called the release or throwout bearing) sits on the gearbox input shaft and presses on the pressure plate fingers when the clutch pedal’s pushed. Its job is simple but critical: give smooth, low‑friction contact so the clutch can disengage cleanly without chatter, squeal or heavy pedal feel. When it’s healthy, gear changes feel tidy and quiet. When it’s tired, it’ll make itself heard.

Because the thrust bearing lives inside the bellhousing, it’s not a routine lube-and-go item. It’s a replace-once-you’re-in-there part, and the right time is whenever the clutch is out for a disc or pressure plate replacement. Most quality clutch kits for the Premacy include a new release bearing for that reason. Skipping it to save a few dollars can mean paying full labour again if it starts whining later.

• Common symptoms of a worn thrust bearing:
  • Whirring, chirping, or grinding noise with the clutch pedal depressed, which fades when released
  • Notchy pedal feel or vibration through the pedal
  • Difficulty selecting gears despite adequate clutch hydraulic performance

Good workshop practice on a Premacy manual is to replace the release bearing with the clutch, lightly lubricate the bearing guide tube if specified by the kit maker (never over‑grease), check fork pivot wear, and ensure the input shaft spigot/pilot bearing is sound. After refit, confirm pedal free play and bleed the hydraulics so the bearing isn’t preloaded at rest.

For owners of automatic Premacy models, there’s no clutch release bearing to worry about. The engine’s crankshaft thrust bearing does exist on all engines, but it’s an internal main-bearing component that isn’t serviced unless the engine’s being rebuilt or there’s abnormal end‑float. If a manual Premacy is showing thrust‑type noise, get a technician to confirm it’s the release bearing rather than the pilot bearing or gearbox input shaft bearing before booking the job.

Popular questions

Does every 2004 Mazda Premacy have a thrust bearing?
Manual models have a clutch release thrust bearing. All engines have a crankshaft thrust bearing internally, but that one isn’t part of routine servicing. Automatic models don’t have a clutch release bearing.

When should the thrust bearing be replaced on a Premacy?
Replace the release bearing whenever the clutch is out—typically during a clutch kit replacement. If there’s pedal‑down noise or roughness traced to the bearing, don’t wait, it’s a gearbox-out job best done with a new disc and pressure plate together.

What noise points to a failing thrust bearing?
A worn release bearing usually whirrs, squeals, or grinds when the clutch pedal is pressed, then quietens when the pedal’s released. If the noise is present all the time or changes with road speed, it’s more likely a gearbox or wheel bearing issue.