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The short version
- Third generation Montero wheel bearing front hub, 2001-2006 four wheel drive, catalogs as HA590145, a bolt-on assembly.
- Montero Sport rear, 2001-2004, uses inner ball bearing 516006. Trucks with the locking rear differential use a different listing.
- Earlier trucks, the 1997-2000 Montero and Montero Sport, use serviceable tapered front bearings with separate seals, the old truck way of doing things.
- The full-size Montero rear rides a solid axle with pressed bearings. Match the old part rather than guessing a number.
Mitsubishi’s proper body-on-frame 4×4 spans two very different bearing cultures under one nameplate. Early trucks pack and adjust their bearings by hand, while the later generation bolts on a sealed cartridge.
Montero wheel bearing numbers at a glance
HA590145 covers the third generation Montero front hub, 2001-2006, four wheel drive.
516006 covers the Montero Sport rear inner ball bearing, 2001-2004, on trucks without the locking differential.
Mitsubishi Montero wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2001-2006 | Front hub assembly, four wheel drive (catalog) | HA590145 check price |
| 2001-2004 | Montero Sport rear inner ball bearing | 516006 check price |
Every model year this chart resolves: 2001, 2002, 2003, 2004, 2005 and 2006.
Price links lead to Amazon searches for that number. As an Amazon Associate this site earns from qualifying purchases.
Lookups run through the cross reference page.
The 1997-2000 Montero and Montero Sport use tapered front bearings with separate seals, serviced the old truck way. Match the old sets when servicing rather than looking for a single part number.
Repacking and adjusting these bearings is the correct service, not outright replacement.
Montero Sport trucks with the locking rear differential carry a different rear bearing listing than 516006. Match the old part when that option is fitted.
The full-size Montero rear rides a solid axle with pressed bearings of its own. Match the old part there too, since no single number covers every build.
Two eras, two bearing philosophies
The Montero wheel bearing story splits cleanly at the two generations. Earlier trucks repack and adjust tapered bearings by hand, the same way full-size trucks were serviced for decades.
The third generation switches to a sealed bolt-on hub, HA590145, closer to how modern crossovers handle the front corner. See the Outlander for how that sealed approach carried forward.
Solid axle at the back
The full-size Montero rear uses a solid axle, a different arrangement from most of the rest of the Mitsubishi lineup. Understanding the difference between an axle bearing and a wheel bearing matters more here than on a typical crossover.
Diagnosing a Montero wheel bearing
- Listen for load-based noise. A hum or roar that grows with speed usually points to a bearing rather than a tire.
- Check for looseness at the wheel. With the wheel off the ground, rock it at 12 and 6 o’clock. Play in that direction signals wear.
- Know which era you have. Earlier trucks may just need a repack and adjustment, not a full replacement.
- Confirm the differential option at the rear. Montero Sport trucks with a locking differential use a different rear listing.
- Spin the wheel by hand. Grinding or roughness while spinning free usually confirms bearing failure.
Common questions
What is the Montero wheel bearing part number for the front hub?
Third generation trucks, 2001-2006 four wheel drive, catalog under HA590145. Earlier trucks use serviceable tapered bearings instead, with no single part number.
Can I repack a Montero wheel bearing instead of replacing it?
On 1997-2000 trucks, yes. Those use tapered bearings with separate seals, meant to be repacked and adjusted rather than replaced outright.
What rear bearing does a Montero Sport use?
Montero Sport trucks from 2001-2004 use inner ball bearing 516006. Trucks with the locking rear differential use a different listing, so match the old part.
Does the full-size Montero rear use a cartridge bearing?
No. It rides a solid axle with pressed bearings, a different design from the front hub. Match the old part rather than guessing a number.
Are third generation Montero front hubs bolt-on?
Yes. HA590145 is a bolt-on hub assembly for four wheel drive trucks, 2001-2006.