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. Quality of product is the most important ingredient in sustaining a successful business. At Midwest Truck & Auto Parts, Inc. We take quality control very seriously. Our QC lab is staffed with dedicated engineers and quality control specialists. Seven state-of-the-art testing machines insure that the quality of our products is unsurpassed: Gleason Sigma Gear Measurement Machine Surface Roughness Tester Mitutoyo USA Hardness Tester Mitutoyo USA Horizontal Optical Comparator Brake Valve and Chamber Tester Starter Tester (w/Load Test & Test Report) Alternator Tester (w/Test Report). The highest standards are applied when engineering and manufacturing our products. From machining and finishing to heat treatment, we demand the best.