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The short version
- The Isuzu Trooper wheel bearing design never changed. Serviceable tapered bearings ran from 1987 through the final 2002 model year.
- Front hardware is identical on 2WD and 4WD trucks. The numbers are inner seal 710168, inner bearing 32009-XA, and outer bearing A-140.
- No bolt-on hub assembly was ever issued for the Trooper. Many rival SUVs switched to one during the 1990s and 2000s.
- The catalogs carry no clean rear bearing row for the Trooper. Match the old part or the VIN when sourcing rear parts.
Isuzu kept the Trooper’s front suspension almost untouched for a decade and a half. While rival SUVs adopted disposable hub units, this truck kept hand-serviced tapered bearings through 2002.
Trooper wheel bearing numbers at a glance
This serviceable tapered set covers 2WD and 4WD Trooper trucks from 1987 through 2002. Production started 11/01/1986 for that first model year.
No hub assembly replaces this set. The front end stayed hand-packed and adjusted for the model’s entire run.
Isuzu Trooper wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 1987-2002 | Front, inner seal, 2WD and 4WD | 710168 check price |
| 1987-2002 | Front, inner bearing, 2WD and 4WD | 32009-XA check price |
| 1987-2002 | Front, outer bearing, 2WD and 4WD | A-140 check price |
Every model year this chart resolves: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 and 2002.
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.
Some parts searches for an Isuzu Trooper wheel bearing turn up hub assembly listings meant for other trucks. The Trooper never received one. The inner seal, inner bearing, and outer bearing above are the only front parts that exist for this truck.
The rear axle has no clean catalog row either. Match the old part or the VIN rather than guessing at a number.
A serviceable front end from first year to last
Most SUVs sold in the US switched to sealed, bolt-on hubs during the 1990s or 2000s. The Isuzu Trooper wheel bearing design never did. A technician still packs the cone and cup by hand on both 2WD and 4WD trucks.
That consistency is unusual for a model that spanned three US generations of styling. Knowing the difference between a serviceable and a sealed bearing matters before ordering parts here.
Shared ground with the NPR and the Rodeo
Isuzu’s cab-over NPR truck shares the same hand-serviced philosophy, though its own numbers are different. Closer to home, the Isuzu Rodeo used this same hardware through 2001 before switching to a hub in 2002.
Browse the rest of the lineup on the Isuzu hub page.
Diagnosing an Isuzu Trooper wheel bearing
- Listen for a steady growl that builds with speed. A worn Isuzu Trooper wheel bearing produces a tone that gets louder the faster the truck moves.
- Jack up the corner and check for play. Grab the tire at 12 and 6 o’clock and rock it, following this check procedure.
- Pull the hub cap and inspect the grease. Gritty or discolored grease usually means the seal has failed and water or dirt got in.
- Reset preload after any service. Since this is a serviceable set, follow proper preload and end play procedure or the repack will fail early.
- Rule out tire and drivetrain noise. Compare the sound against typical tire noise symptoms before pulling the hub apart.
Common questions
What is the front Isuzu Trooper wheel bearing part number?
The front uses a serviceable tapered set: inner seal 710168, inner bearing 32009-XA, and outer bearing A-140. These cover both 2WD and 4WD trucks from 1987 through 2002.
Did the Trooper ever get a bolt-on hub assembly?
No. Every documented model year kept the hand-serviced tapered design, unlike many SUVs from the same era.
What is the rear Isuzu Trooper wheel bearing part number?
The catalogs do not carry a clean rear row for the Trooper. Match the old part or confirm by VIN when sourcing rear parts.
Do 2WD and 4WD Troopers use different front bearings?
No. The same inner seal, inner bearing, and outer bearing numbers apply to both drivetrains across the full run.
Is the Rodeo’s front bearing the same as the Trooper’s?
Through 2001, yes, the Isuzu Rodeo used the identical front hardware. The Rodeo switched to a bolt-on hub for 2002, while the Trooper never did.