Parts for your 2023 Mitsubishi Triton-Wheel bearings

2023 Mitsubishi Triton wheel bearings: what they do and when to service them

Wheel bearings are absolutely fitted to the 2023 Mitsubishi Triton. This isn’t a niche part — every road wheel rides on bearings. Mitsubishi’s factory workshop literature for the MR Triton (2019–2023) and the official parts catalogue confirm a sealed front hub bearing assembly and serviceable rear axle bearings on the live rear axle. In short, wheel bearings are relevant to every 2023 Triton on Aussie and Kiwi roads.

On this ute, the front end typically uses a unitised, sealed hub bearing. It’s designed to be low-maintenance and replaced as a complete assembly once worn. At the rear, the semi-floating live axle runs a pressed-on bearing and retainer with an oil seal in the axle housing — a tougher, serviceable setup built for payloads and towing. This layout is well-documented in Mitsubishi’s workshop procedures and parts listings used by dealers and trade workshops.

What do they actually do? Wheel bearings let the wheels spin smoothly while carrying vehicle weight, cornering loads and brake forces. Good bearings keep rolling friction low, help tyres wear evenly, and support crisp steering and stable braking — all the stuff that makes a Triton feel planted on bitumen and confident on corrugations.

They’re not a scheduled replacement item, they’re serviced on condition. During regular servicing (or after water crossings, beach runs or muddy work sites), a technician should:

• Road test for humming/growling that changes with speed or when loading/unloading a corner.
• Lift and check wheel play, roughness or notchiness when the wheel is spun by hand.
• Inspect for heat discolouration, metal flake in hub grease, or leaking axle oil at the rear seal.

If a front bearing is noisy or loose, the fix is a new hub assembly — no repacking. For the rear, replacement involves pulling the axle shaft, pressing off the old bearing and retainer, fitting a new bearing, retainer and oil seal, and reassembling to factory torque specs. Because press work, ABS tone rings and seals can be damaged easily, most owners leave rear bearing jobs to a workshop with the right jigs and a calibrated torque wrench.

How long do they last? Many Triton bearings run well past 150,000 km, but frequent immersion, oversized wheels/tyres, heavy towing and impacts from potholes will shorten life. Stay ahead of trouble by rotating tyres on time, torqueing wheel nuts correctly, and booking an inspection if there’s any new wheel noise, ABS warning, or uneven tyre wear.

FAQs

How can someone tell if a 2023 Triton wheel bearing is failing?
Common clues are a droning or growling that gets louder with speed, a change in noise when weaving gently, warmth at one hub after a drive, or a slight vibration through the floor. Jacked up, the wheel may feel rough or have play when rocked at 12 and 6 o’clock. Any of these signs means it’s time for a proper inspection.

Do the front and rear bearings service the same way on a Triton?
No. The front uses a sealed hub unit — when it’s worn, the whole hub/bearing assembly is replaced. The rear runs a pressed-on bearing with a separate retainer and oil seal on the axle shaft. That rear setup is serviceable but needs press tools and careful seal handling.

Is it safe to keep driving with a noisy wheel bearing?
It’s not recommended. A failing bearing can overheat, damage the hub or axle, upset ABS readings, and in extreme cases seize. Short trips to a workshop at moderate speed may be OK, but delaying repair usually makes the job larger and pricier.