Parts for your 2018 Mitsubishi Asx-Thrust bearing

2018 Mitsubishi ASX thrust bearing: where it applies, what it does, and how to look after it

Based on Mitsubishi technical literature, a “thrust bearing” (commonly used in Australia and New Zealand to mean the clutch release/throw‑out bearing) is fitted to 2018 Mitsubishi ASX models with the 5‑speed manual transmission, and is not used on CVT (automatic) variants. The ASX engine also has internal crankshaft thrust bearings within the main bearing set, but these aren’t routine service items.

Why it’s not used on CVT models: the CVT ASX uses a torque converter and a continuously variable drive system, so there’s no manual clutch or pressure plate for a release/thrust bearing to press against. That’s why there’s no serviceable clutch thrust bearing on CVT cars.

For ASX models with a manual gearbox, the thrust (release) bearing is a small but vital component. It sits between the clutch fork/hydraulic actuation and the clutch pressure plate. When the driver presses the clutch pedal, the bearing allows smooth, low‑friction contact with the pressure plate diaphragm fingers so the clutch can disengage cleanly. That helps prevent grabby engagement and reduces wear on the clutch hardware.

Servicing advice for a manual 2018 ASX: the thrust bearing isn’t a scheduled replacement item by time or kilometres, instead, it’s replaced on condition, almost always when the clutch is being renewed. Best practice is to replace the bearing whenever the gearbox is removed, ideally as part of a full clutch kit (friction disc, pressure plate, release/thrust bearing, and pilot/spigot bearing if applicable). It adds little cost compared with the labour saved by not having to reopen the job later.

Typical symptoms of a tired thrust bearing include a chirp, whirr, or growl when the clutch pedal is depressed, difficulty getting gears cleanly, or a pedal feel that’s rough or notchy. Noise that disappears when the pedal is pressed can point to gearbox input bearings instead, so a proper diagnosis matters. A technician will check the bearing for smooth rotation, free play, heat discolouration, and signs of contamination, they’ll also inspect the release fork, guide tube, clutch fork pivot, and the slave cylinder operation. Any contact points get a light application of the correct high‑temperature grease—taking care not to contaminate the friction surfaces.

Owners can extend clutch and thrust bearing life by avoiding riding the clutch, keeping the pedal fully released at lights, and addressing any gearbox oil leaks promptly. Expect around 5–8 hours of labour for a clutch job on a front‑drive transaxle like the ASX, which is why doing the thrust bearing at the same time is a smart call.

Technical references used:

• Mitsubishi Motors ASX/RVR/Outlander Sport Service Manual (GA/GA2W series): Clutch (Manual Transmission) and CVT sections, showing a conventional clutch release bearing for 5‑MT models and no clutch release mechanism on CVT models.
• Mitsubishi ASA/Global EPC parts listings for GA2W ASX: Release (thrust) bearing shown under Group 21 (Clutch) for manual variants, absent for CVT.
• Engine (4B1x family) workshop manual: notes on crankshaft thrust bearings integrated with the main bearing set (internal, non‑routine service items).

FAQs

Does a 2018 Mitsubishi ASX have a thrust bearing?
Manual models do—they use a clutch release (thrust) bearing. CVT automatics don’t have one because there’s no manual clutch to operate. The engine’s internal thrust bearings exist in all variants but aren’t serviced unless the engine is rebuilt.

What are the signs the thrust bearing is failing on an ASX?
Listen for a chirp, whirr, or grinding noise when the clutch pedal is pressed, a rough pedal feel, or gears that don’t select smoothly. If the noise goes away when the pedal is pressed, that can be a different issue (such as an input shaft bearing), so a proper inspection is needed.

Should the thrust bearing be replaced with the clutch?
Yes. Given the labour to remove the gearbox, it’s standard practice to fit a new thrust bearing with every clutch kit. It’s inexpensive compared with the time saved and helps ensure smooth, quiet operation after the job.