The D6N has a new transmission with lock-up clutch torque converter that delivers ease of operation, increased net power, plus a 10-15% improvement in fuel efficiency. The Cat C7.1 ACERT engine delivers 166 hp in net power. The bore is at 4.1 in., stroke is at 5.3 in. and displacement is at 433 cu in. The machine operates at a weight of 36,943 lb. Standard Enhanced Auto Shift helps save fuel by auto- matically upshifting/downshifting to maintain the most efficient gear based on load.