Parts for your 2017 Mazda Cx-5-Thrust bearing

2017 Mazda CX‑5 thrust bearing — what it does, and when to sort it

Based on Mazda’s own Workshop Manual for the 2017 CX‑5 (KF) and the Mazda Electronic Parts Catalogue, this model absolutely uses thrust bearings. There are two places to know about: every Skyactiv‑G engine in a 2017 CX‑5 has an integrated crankshaft thrust bearing (at the centre main bearing) to control end float, and any CX‑5 fitted with the Skyactiv‑MT manual gearbox also has a clutch release bearing that’s commonly called a thrust bearing. Automatic models don’t have a serviceable clutch thrust bearing, but the engine’s thrust bearing is still there doing its job.

Purpose-wise, the engine thrust bearing keeps the crankshaft from walking forwards and backwards under axial loads — things like clutch engagement on manuals or the push/pull from accessory belt loads. By holding end float to spec, it protects the crank, bearings and timing components from nasty wear. The clutch (thrust) release bearing, on manual variants, lets the pressure plate disengage smoothly when the pedal’s pressed, so shifts stay clean and pedal effort light.

Neither thrust bearing is a routine service item. The engine thrust bearing is checked for end float if there’s a reason to suspect wear, or during a rebuild. Keep good quality oil in it, stick to service intervals, and avoid habits that add constant axial load — like riding the clutch at lights — and it’ll generally last the life of the engine. For manuals, the clutch release/thrust bearing is replaced as part of a full clutch kit or if it gets noisy.

• Common clutch thrust bearing symptoms (manual CX‑5): whirring or chirping with the pedal pressed, pedal vibration, notchy engagement, harder gear selection.
• Possible engine thrust bearing clues: metallic rub at idle that changes when the clutch is pressed, crank pulley movement in and out, or end float out of spec when measured.

Replacement tips (manual): use a quality kit, replace the release bearing, pressure plate and disc together, inspect the fork, pivot and guide tube, and lightly grease per Mazda specs (Workshop Manual — Clutch System, Skyactiv‑MT). If you’re auto, relax — there’s no clutch thrust bearing to service. If any shop suggests a thrust bearing change on an auto CX‑5 as a routine job, they’re likely mixing up terms.

Technical references: Mazda Workshop Manual (2017 CX‑5 KF — Engine Mechanical, SKYACTIV‑G, Clutch System, Skyactiv‑MT) and Mazda Electronic Parts Catalogue confirming the centre main (No. 3) thrust surface and the manual release bearing fitment.

Popular questions about 2017 Mazda CX‑5 thrust bearings

Does the 2017 Mazda CX‑5 actually have a thrust bearing?
Yes. All engines have a crankshaft thrust bearing built into the centre main bearing. Manual‑transmission CX‑5s also have a clutch release (thrust) bearing. This is documented in the 2017 CX‑5 Workshop Manual and Mazda’s parts catalogue.

When should the thrust bearing be replaced?
There’s no set interval. On manuals, the release/thrust bearing is replaced with the clutch kit or if it becomes noisy or rough. The engine thrust bearing is only replaced during repair if crank end float is out of spec or there’s related wear — not as routine maintenance.

What symptoms point to a failing thrust bearing on a CX‑5?
Manual clutch bearing: squeal or whirr with the pedal pressed, a pulsing pedal and difficult shifts. Engine thrust bearing: noticeable in‑out movement of the crank pulley, a scraping change when pressing the clutch, or measured end float beyond spec during inspection.