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The short version
- The Nissan D21 wheel bearing on 4WD trucks is a serviceable tapered setup: seal 710073, inner set SET5, outer set SET3, for 1990 through 1997.
- 2WD front has no clean row in the catalogs; match the old part or confirm the VIN.
- The rear has no clean row either, on 2WD or 4WD; match the old part or confirm the VIN.
- SET5 and SET3 are cone-and-cup sets that need repacking and preload, not a cartridge hub.
Nissan called it the Hardbody for a reason: under the D21’s front end sits plain, serviceable tapered hardware, the same approach Nissan used across its trucks and SUVs of the era.
4WD front, one clean set
The 4WD Nissan D21 wheel bearing front runs this seal and pair of cone-and-cup sets across the whole 1990 to 1997 run.
2WD trucks and every rear position fall outside the documented rows and go by VIN instead.
Repack technique for cone-and-cup sets like these is on the repacking page, preload on the preload page.
Nissan D21 wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 1990 to 1997 | Front 4WD, seal | 710073 check price |
| 1990 to 1997 | Front 4WD, inner set | SET5 check price |
| 1990 to 1997 | Front 4WD, outer set | SET3 check price |
| 1990 to 1997 | Front 2WD | match old part or VIN |
| 1990 to 1997 | Rear | match old part or VIN |
Every model year this chart resolves: 1990, 1991, 1992, 1993, 1994, 1995, 1996 and 1997.
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Lookups run through the cross reference page.
Sets, not a sealed hub
SET5 and SET3 are cone-and-cup sets meant for a serviceable front end, cleaned, repacked and adjusted like any tapered hardware.
Treating them like a bolt-on hub unit and skipping the preload step is the fastest way to cook a new set early.
Don’t borrow the Pathfinder’s number
The D21 platform underpins the same-era Pathfinder, but the two do not share a front inner set. Pathfinder trucks from 1990 to 2004 used SET37 inner, a different set entirely, so it should not be swapped onto a D21. The Xterra arrived later on a related platform era as well.
Succeeded by the Frontier
Nissan replaced the D21 with the Frontier for the 1998 model year, and the Frontier runs its own separate wheel bearing listings. A D21 owner should not cross-shop numbers between the two trucks.
Diagnosing a Nissan D21 wheel bearing
- Confirm 4WD before ordering; 2WD has no documented row to match against.
- Pull the hub and check the grease before assuming the set is worn out.
- Inspect races and rollers together, since either can pit on its own.
- Set preload by feel and spec on reassembly, not by guesswork.
- On any rear complaint, work by VIN since no clean row exists.
The general check routine is on the checking page.
Common questions
What fits the front of a 4WD Nissan D21 wheel bearing job?
Seal 710073 with inner set SET5 and outer set SET3, across the whole 1990 to 1997 run.
What about a 2WD D21?
There is no clean front row for 2WD trucks in the catalogs. Match the old part or confirm the VIN.
Can I use Pathfinder inner set on a D21?
No. The Pathfinder used SET37 inner from 1990 to 2004, a different set from the D21’s SET5.
Is this a bolt-on hub unit?
No. It is serviceable tapered hardware that needs repacking and preload adjustment, not a cartridge swap.
What fits the rear?
There is no clean rear row in the catalogs for this truck, on 2WD or 4WD. Match the old part or confirm the VIN.