This U-bolt kit contains (2) U-bolts and (4) hi-nuts and is covered by our 1-year, unlimited mileage warranty. World American is the Heavy Duty and Export Division of Midwest Truck & Auto Parts, Inc. We supply drivetrain, brake, steering, electrical and hydraulic components to the heavy, duty aftermarkets. Specifically, we distribute Manual Transmission & Transfer Case Components, Differential Components, complete Rebuild Kits, Bearing Kits, Ring & Pinion Gear Sets, Cases, Housings, Axles, Yokes, U-Joints, Air Brake Valves, Brake Chambers Brake Hardware Kits, Air Springs and more.