I've purchased the Precision brand with the same part number [ 515086 ] a few times before at my local O'Reilly Auto parts store. Big price difference though, about $150 cheaper at Amazon. Just click on the amazon link, upper right of this page. There's a few problems however, the biggest being the item I received fits a 4X4 2500-HD Chevy, mine is rear or 2-WD. The picture currently in view of the 515086 shows the inner spline for the 4X4 axle. The last 2 from O'Reilly Auto were sealed and with no opening. The 4X4 part will fit and function however it will fail prematurely because of the exposed bearing shield. There would normally be a CV axle boot protecting the bearing. I've confirmed my findings with a few knowledgeable parts people and an Auto Recycler friend 40 years in the business as well. Secondly the part was packaged so poorly all 8 suds were protruding from the box.

I'd like to cover a few details about the install but also mention the noise these bearings make letting you know it's time for replacement. With the front wheel raised, like if you were going to change a tire, there should be Zero play. The noise they make starts out very faint then after a few hundred miles there is a prominent hum or howl. I suspected the front right and guessed correctly. Takes about 90 minutes for the job with the toughest part getting the 2 caliper bolts removed. I recommend replacing them as they are typically corroded. GM part #18026702.

The only special tool you'll need is a high quality 21mm 1/2 drive socket and "breaker-bar" for the (41mm X 16 X 2) caliper bolts. When replacing them smear a drop of anti-seize lubricant only on the top shoulder, not the treads. This will make it much easier to remove next time. 

In the box: Complete Hub-bearing assembly (including wheel stud bolts) with ABS wiring harness

Point of origin: China

Warranty: 12 months or 12,000 miles

Product features: [courtesy of amazon]

· ABS sensors are triple tested for proper voltage and ohm readings
· Triple lip seals prevent moisture and contamination from entering the bearing
· Induction hardened raceways are the current OEM design enhancing product life, performance and durability
· Hub assemblies are tested for contaminate exclusion, vibration, run out, radial/axial force and load

Recommended: Yes