If you have a Dodge 2500 4X4 you need this part. Timken is the best. Don't try to save a few bucks, buy it and you're done. Installation wasn't difficult. You need a special socket, but that's about it. I tried to buy an O'Reilly store but they don't have one. NAPA got it in one day. If you don't have one, just order one and a new axle nut and you're good to go. Tighten it and you will have no more wheel bearing problems. I asked Pep Boys to make wheel bearings for me on the trip. Lasted less than a year or didn't travel much. Installed them in the driveway one day. work is done. Now I will only use bearings. I also bought them for my wife Subaru.