Parts for your 2019 Bmw X3-Thrust bearing

2019 BMW X3 thrust-bearing — what it does and when to replace it

Yes, the 2019 BMW X3 (G01) uses thrust bearings. They appear in two key places: inside the engine as part of the crankshaft main bearing set to control end float, and at the front suspension’s strut top mounts (the support/guide bearing that lets the spring and strut turn smoothly as you steer). With the 8‑speed Steptronic automatic standard on this model year, there’s no separate manual clutch release “thrust” bearing to worry about.

Purpose-wise, a thrust bearing handles axial (end-on) loads and keeps everything tracking straight while still allowing low-friction rotation. On the X3’s front suspension, that thrust bearing stops the coil spring from winding up and binding when you turn the wheel, so steering feels light, linear, and quiet. When it wears, owners often notice:

• Notchy or heavy steering, especially at parking speeds
• Groans, creaks, or a “twang” as the spring releases
• Clunks over bumps from the top of the strut
• Poor self-centring or a pull after cornering (memory steer)
• Uneven tyre wear that aligns with steering stiffness

There’s no fixed replacement interval for the strut top thrust bearing, but ANZ conditions, big wheels, and rougher roads can see them tire by the 80–150,000 km mark. A good workshop will check for binding or play during suspension or brake servicing by turning the steering on the hoist and feeling for notchiness through the spring. If replacement’s needed, it’s best done in pairs and commonly with the strut top mount, since both parts age together. Always use a proper spring compressor, renew dust boots and bump stops if they’re tired, and finish with a wheel alignment. Final torques should be set at normal ride height to avoid preloading the bushes.

The engine’s crankshaft thrust bearing isn’t a routine service item. It lives its life quietly managing axial loads from the converter and accessory drives. Unless there’s evidence of abnormal end float, metallic debris in the oil, or engine-out work, it’s left alone. Fresh oil at the correct spec and intervals is the best protection it can get.

Technical sources: BMW ISTA/TIS engine repair manuals for B46/B48/B58 (main bearing shells with thrust faces), BMW ETK (G01 X3) front axle “spring strut support with bearing”, BMW product information listing the 8‑speed Steptronic as standard fitment.

Popular questions

Does the 2019 BMW X3 have a thrust bearing?
It does. The engine uses a thrust bearing as part of the main bearings to control crankshaft end float, and the front suspension uses a thrust (support) bearing in each strut top mount for smooth steering. Because the 2019 X3 runs an 8‑speed automatic, there’s no manual clutch release bearing on this model year.

What are the signs the strut top thrust bearing is worn on a 2019 X3?
Look for heavy or notchy steering at low speed, creaks or a spring “twang” when turning, clunks from the top of the strut over bumps, and steering that doesn’t self‑centre cleanly. If those show up, have the mounts and bearings inspected and plan on an alignment after repair.

Do I need an alignment after replacing the strut top bearing?
Yes. Any time the strut is removed or the top mount/bearing is replaced, a wheel alignment is recommended. It ensures steering feel is consistent and tyre wear stays even, especially important on ANZ roads and with larger wheel packages.