Parts for your 2021 Mitsubishi Outlander-Wheel hubs

2021 Mitsubishi Outlander Wheel Hubs: What They Do and When to Replace

Wheel hubs are absolutely used on the 2021 Mitsubishi Outlander. Technical references that confirm this include the Mitsubishi Motors service manual (Front Axle Group 33A and Rear Axle Group 35A) for the 2016–2021 Outlander/Outlander PHEV, the Mitsubishi ASA electronic parts catalogue, and major aftermarket catalogues from SKF, NTN-SNR and Timken. These sources list unitised (sealed) wheel hub and bearing assemblies front and rear, with integrated ABS encoder rings.

On this model, the wheel hub is the sturdy flange that the brake rotor and wheel bolt onto. Inside is a sealed bearing that lets the wheel spin smoothly while carrying the Outlander’s weight and cornering loads. The hub also provides the mounting for the ABS/speed signal and keeps the rotor running true so braking stays consistent. Front hubs sit on the driveshafts for FWD/AWD, while the rear hubs are bolted to the trailing arm/knuckle assembly.

Because they’re sealed, Outlander hub bearings aren’t a grease-and-go item, when they wear, the whole hub assembly is replaced. During routine servicing (every 15,000 km or as scheduled), a quick health check goes a long way:

• Spin and listen for a dull hum or rumble that rises with road speed.
• Check for free play at 12 and 6 o’clock with the wheel off the ground.
• Look for uneven rotor runout or ABS warning lights.
• After a short drive, feel for a hot hub compared to the others.

If replacement’s needed, the job typically involves removing the caliper and rotor, undoing the hub bolts (and front axle nut on FWD/AWD), then fitting the new hub. Reuse of axle nuts or hub bolts isn’t recommended—follow the service manual for new fasteners, threadlocker and torque specs. Clean the hub-to-rotor face so the rotor sits flat, and torque wheel nuts to the manufacturer’s spec to avoid warping and premature bearing load. An ABS light may need a scan-tool reset after the work.

There’s no fixed lifespan, but quality hubs often run well past 100,000 km. City kerbs, water ingress, or over-tightened wheel nuts can shorten their life. When replacing, stick with reputable brands (OE Mitsubishi, NTN/NSK, SKF, Timken) to keep the Outlander quiet, safe and steady on Aussie and Kiwi roads.

Popular questions about 2021 Mitsubishi Outlander wheel hubs

Do the 2021 Outlander’s wheel bearings get repacked, or are they sealed?
They’re sealed hub-and-bearing units, so there’s no repacking or adjustment. When they wear or get noisy, they’re swapped out as a complete assembly. That design improves durability and keeps contaminants out, which suits daily driving and long trips alike.

What are the common signs a wheel hub is failing on this model?
Think droning or humming that changes with speed, a faint grinding when cornering, ABS warnings, or a tiny bit of free play when you rock the wheel at the top and bottom. If one corner runs noticeably hotter after a short drive, that’s a clue too. Get it checked promptly to avoid brake and tyre wear.

Should hubs be replaced in pairs?
Not strictly. It’s fine to replace just the noisy or loose side. If the vehicle has high kilometres and both sides show similar symptoms, doing both can save time and another visit, but it’s not mandatory.