Pretty sure I've seen other brands used in big rigs. lol. That's Like that Chevy commercial where they say that they use the same brand transmission that's in an Abrams tank. Yeah Both transmissions are made by Allison, but the two have nothing in common. I buy my bearings from e-bay, with a lifetime warranty. I found out that they last longer when I don't beat the crap out of my truck every weekend. Timkens are good, but imho they are over priced.

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2003 Ranger FX4 level II. 3" BL, 33x12.50 GT Radial Mud Claws, Custom front and rear bumpers with winch hookups, custom flatbed, with hi-lift, and full size spare mount, 12,000 lb winch mounted under bed, Electric fan, and of course a flowmaster.