Meeting EPA Tier 4 Interim regulations using smart engine technology, Models D37EXi/PXi-23 and D39EXi/PXi-23 can perform finish grading as well as rough dozing. At 2,200 rpm, dozers push with net 89 hp and 105 hp, respectively. Machines include factory-installed cab top GNSS antenna, optimized inertial measuring unit, and stroke sensing hydraulic cylinders. Komatsu Diesel Oxidation Catalyst system removes soot using 100% passive regeneration without need for Diesel Particulate Filter.
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