Kenworth has designed a high-capacity cooling package using a 1,780-square-inch radiator for its T800 wide-hood heavy haul tractor. The radiator, 17 percent larger than the one previously used, is needed for stationary pumping or low-speed running with high-output EPA ’07 diesels, which give off more heat than previous engines. It will effectively cool up to 600-horsepower Cummins ISX and Caterpillar C15 engines, which are among those available in the T800H. Using the larger radiator and other cooling parts, the T800H is rated for up to 140,000 pounds GCW for all road conditions, and while pumping cement or other products in oil field work, the builder said. The Kenworth T800 wide hood model is available with a standard cab, the Extended Day Cab option, or AeroCab sleepers.