Home › Vehicles › Chevy › Chevrolet Blazer › 1998-2005 Chevy Blazer Wheel Bearing Part Numbers
The short version
- A 1999 Blazer front wheel bearing is a 4WD hub assembly, 513200. 2WD trucks instead use a serviceable tapered bearing set with inner seal 4739.
- From 2003 to 2005, the ZR2 package switches the 4WD front to 513124, with seal 3553. Other 4WD trims can carry either 513200 or the overlapping 513124 listing.
- The rear is a solid axle on every 1998 to 2005 Blazer. That makes it axle bearing territory, not a wheel bearing part number.
- 2WD front bearings get their preload adjusted on assembly, unlike the sealed 4WD hub.
From 1998 to 2005, Chevy sold the Blazer with two completely different front setups depending on drivetrain. A 1999 Blazer front wheel bearing is a bolt on hub if the truck is 4WD. It is a pair of serviceable tapered bearings if the truck is 2WD.
Blazer wheel bearing numbers at a glance
4WD: hub assembly, 513200 for most years, 513124 for ZR2 and some overlapping listings.
2WD: serviceable tapered bearings with inner seal 4739, preload adjusted by hand.
Chevy Blazer wheel bearing part numbers
| Years | Detail | Number |
|---|---|---|
| 2003 to 2005 | Front, 4WD, ZR2 | 513124 check price |
| 2003 to 2005 | Front, 4WD, except ZR2 | 513200 check price |
| 1998 to 2005 | Front, 4WD, second listing | 513124 check price |
| 1998 to 2005 | Front, 2WD, inner seal | 4739 check price |
| 1998 to 2002 | Front, 4WD | 513200 check price |
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Lookups run through the cross reference page.
This page covers the 1998-2005 Chevy Blazer: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005. Other years live on the main Chevy Blazer wheel bearing page.
513200 and 513124 both cover 4WD front hubs across this span. ZR2 trucks from 2003 to 2005 are the one clear case for 513124.
Outside of ZR2, match the number the old part carries rather than guessing. A 1999 Blazer front wheel bearing on a non ZR2 4WD truck could be listed either way.
Year by year
1998 through 2002 document a single 4WD hub number, 513200, alongside the overlapping 513124 listing that runs the whole span. 2WD trucks in these years already use the serviceable setup with seal 4739.
2003 through 2005 add the ZR2 split. ZR2 trucks take 513124, while other 4WD trims can carry 513200 or the overlapping 513124 listing. A 1999 Blazer front wheel bearing predates this split, since ZR2 did not exist yet.
Every year in this run treats the rear the same way: a solid axle with no hub numbers. 2WD fronts stay serviceable throughout.
Two front designs sharing one truck
The 4WD hub assembly and the 2WD serviceable setup are not interchangeable in either direction. They are built for different front suspensions entirely. The 2WD side calls for repacking wheel bearings and setting preload correctly during assembly.
The solid rear axle on every Blazer in this range is axle bearing territory, not wheel bearing territory. It takes its own diagnosis and its own parts entirely.
Diagnosing a Chevy Blazer wheel bearing
- Confirm drivetrain first. 4WD and 2WD Blazers do not share a front bearing design, so this decides everything else.
- On 4WD, check for ZR2 badging. That is the clearest signal for the 513124 hub on 2003 to 2005 trucks.
- On 2WD, check preload before condemning the bearing. A loose or over tight adjustment can feel like a bad bearing. See preload and end play for the target feel.
- Listen for a speed related growl. See how to check a wheel bearing for the basic routine either way.
- Check the noise in a turn. Wheel bearing noise on turns tends to shift depending on steering direction.
Common questions
What wheel bearing does a 1999 Blazer use?
A 1999 Blazer front wheel bearing is 513200 on 4WD trucks. On 2WD trucks it is a serviceable tapered set with inner seal 4739. The rear is a solid axle with no hub number.
What wheel bearing does a 2004 Blazer ZR2 use?
The 2004 ZR2 takes hub assembly 513124 in front, with inner seal 3553. Non ZR2 4WD trucks that year can carry either 513200 or 513124.
Why are there two different numbers for the same 4WD years?
Two overlapping listings, 513200 and 513124, both cover 4WD fronts across most of this run outside the clear ZR2 case. Match the number the old part carries when a lookup shows both.
Do 2WD Blazers use a hub assembly like 4WD trucks?
No. 2WD front bearings are serviceable tapered units with inner seal 4739. They get adjusted for preload by hand rather than replaced as a sealed hub.
Can I get a rear wheel bearing part number for this Blazer?
No. The rear on every 1998 to 2005 Blazer is a solid axle. That puts it under axle bearing service rather than a wheel bearing part number.