CATERPILLAR AE40, - 44 to 48 Tons Carrying Capacity - Tele-Tram Ejector Box c/w Hydraulic Controlled Tailgate - Caterpillar 3408E HEUI Diesel Engines - Engine Arrangement Series Number: 6DE6588 - 490 Horsepower - Caterpillar Powershift Transmissions - Caterpillar Torque Converters - Caterpillar Front and Rear Differentials - Caterpillar Enclosed Multi-Disc Liquid Cooled Brakes - Spring Applied Hydraulic Released Park/Emergency Brakes - Enclosed ROPS Canopies