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Komatsu America Corp.’s 108,280-pound WD600-6 Wheel Dozer is equipped with a Tier 3 compliant engine and designed to work with either a straight blade or U blade in many applications. It offers improved productivity, lower fuel consumption and increased reliability. The WD600-6 is powered by a Komatsu Tier 3, SAA6D170E-5 six-cylinder engine, which produces 502 HP at 1,800 RPM, a significant increase in horsepower over the previous model. Komatsu’s Tier 3 engine is equipped with innovative new technologies including an electronic control system to optimize vehicle performance; a heavy-duty High Pressure Common Rail Fuel Injection System; a new combustion system for reduced noise and fuel consumption; a cooled Exhaust Gas Recirculation system and an air-to-air charge air-cooling system.