Installed these into a 2002 Nissan Altima 2.5S Jan 1, 2016 and they are working out great. If your Altima has ABS, these are the bearings to get. Very easy to put in and it was sweet silence after these went in. The left bearing was going (could hear a hum like road noise coming from the left rear side of the vehicle) but decided since I had to replace one, why not do both as a preventative step.Installation involved getting the car on jack stands, removing the wheels, break calibers and rotor. Service manual suggested removing the ABS cable and emergency brake cable to keep the from getting damaged, but if you use the proper tools and are careful, all you need to do is remove the 4 mounting bolts for each bearing and the bolt in the new ones, and the replace everything in the reverse order. You DO NOT have to disconnect the disc break caliber, but suspend it from the shock with a piece of cord to keep it out of the way without putting a strain of the hydraulic brake lines. Be sure to use Loctite on the bolt threads when torquing everything to specs. You do not have to disturb the emergency break setup at all as the bearings easily pass through fit in the middle of the emergency brake mechanism. I would recommend a small sledge hammer to break loose the rotor from the old wheel bearing. When removing the bearing itself, you can unscrew all of the mounting bolts and leave one or two just unscrewed several turns. Using something like a breaker bar or other solid metal rod like a rebar, position the end on the head of the bolt (as you take them out from behind the bearing) and give it a few taps with the small sledge. That was all that was needed to pop the bearing loose from the rear spindle, and then continue to remove the mounting bolts.