ZL tapered roller bearing sets have been manufactured to QS9000 standards and packaged for your wheel bearing replacement needs. The cleanest, high quality bearing steel is formed into the cups, cones, rollers, and cages that are integral components of each set. Raceways are precisely crowned and then super finished to a mirror like gloss assembled on modern production machinery, each bearing is inspected to the zero defects level. ZL bearing has been a manufacturer and seller of tapered roller bearings since 1984. Millions of ZL tapered roller bearings operate every year in the United States and around the world in all types of vehicles and trucks. ZL was recently the winner of the prestigious Dana Corporation Diamond Award for outstanding quality and service. ZL has won many other quality and service awards for the supply of tapered roller bearings from recognized industry leaders.