For over 38 years now, A TO Z U.S.A EXPORT is one of the largest international wholesale buyers and suppliers of used heavy duty truck parts. We stock a complete line of USED TRUCK including DIESEL ENGINES, heavy duty truck TRANSMISSIONS , REAR ENDS , and all related SMALL PARTS. We have a large inventory on hand at all times, capable of supplying you with what you need, when you need it, and at a reasonable price. No order too large or too small; order one piece or a trailer load. Over 1000 Diesel Engines In Stock Hundreds of Heavy Duty Truck Transmissions In Stock (Standard & Automatic) - Hundreds of Truck Rear Ends In Stock -