Parts for your 2008 Audi Q5-Thrust bearing

2008 Audi Q5 thrust bearing: what it is, why it matters, and when to service it

Technical documentation confirms the 2008 Audi Q5 (Type 8R) does use thrust bearings. The engines employ crankshaft thrust bearings/washers to control axial end‑float, and manual or 7‑speed S tronic drivetrains use clutch release (thrust) bearings in their actuation. Key sources: Audi/Volkswagen workshop manuals (ElsaWin) for VAG engines showing thrust washers at a main bearing journal, Audi Self‑Study Programme for the 0B5 7‑speed S tronic describing the dual‑clutch module and release bearings, and ETKA parts listings for 8R Q5 engine main bearings and clutch release components.

On this Q5, a thrust bearing has two day‑to‑day jobs. In the engine, it keeps the crankshaft from walking fore and aft under clutch load, converter load or accessory belt thrust. That protects the crank, bearings, oil pump gears and the timing drive from misalignment. In the gearbox side of things (manual and S tronic models), the release bearing transfers pedal or actuator force smoothly into the clutch pack so the car can disengage drive without graunching. When any of these bearings start to give up, you’ll feel it across the car: a jumpy clutch take‑up, odd pedal feel, scraping or whirring that changes when the clutch is pressed, or in bad engine cases, a clunk and visible crank pulley movement.

Servicing is pretty straightforward in principle, but the approach depends on which bearing you’re talking about:

• Engine crankshaft thrust bearing: not a routine service item. It’s inspected during bottom‑end work or if there’s excess end‑float. A tech measures end‑play with a dial gauge against factory spec. Replacement means removing the sump and main caps and fitting the correct‑size main bearing set/thrust washers, then re‑measuring. Fresh oil and filter are a must.
• Manual clutch release bearing: treat it as a replace‑every‑clutch component. On concentric slave setups, the bearing and slave are one unit — replace and bleed the system whenever the clutch is out. Check the guide tube and fork for wear.
• 7‑speed S tronic (0B5): the release bearings live inside the clutch module. They’re serviced when the clutch pack is replaced. Keeping up with S tronic fluid and filter changes (typically every 60,000 km) and performing clutch adaptations helps the bearings live an easier life.

If the Q5 is showing symptoms, don’t delay — a tired thrust bearing can snowball into bigger bills, from chewed clutch fingers to crankshaft and timing damage. A quick check by a workshop with VAG‑specific tools will tell the story.

• Does a 2008 Audi Q5 have a thrust bearing?
  Yes. The engine uses crankshaft thrust bearings, and manual/S tronic variants use a clutch release (thrust) bearing in the actuation system.
• What are signs a thrust bearing is worn on a Q5?
  Clutch pedal noise that changes when pressed, rough or notchy engagement, shudder, or drivetrain whirring. Severe engine thrust wear can cause a knock and visible crank pulley movement.
• When should it be replaced?
  Engine thrust bearings are replaced during bottom‑end repairs or if end‑float is out of spec. Manual release bearings should be renewed with every clutch job. S tronic release bearings are replaced with the clutch pack.