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Komatsu America offers two rigid dump trucks: the HD325-7 and HD405-7. Designed for sand and gravel and rock quarry sites, both trucks increase productivity while lowering fuel consumption, provide a safer and more comfortable operator environment and offer improved durability and reliability. The HD405-7 is Komatsu’s 45 ton truck joining the company’s full line-up of rigid and articulated dump trucks. The HD325-7 and HD405-7 both feature a powerful, clean SAA6D140E-5 turbocharged, after-cooled diesel engine that provides a maximum net output of 498 HP. The new trucks meet EPA Tier 3 and EU stage 3A emission regulations and their high performance engines are enhanced with an advanced cooling system and improved fuel pre-filters. Komatsu’s new rigid dump trucks feature environmentally friendly lead-free aluminum core radiators. To protect the environment, a tank is installed to recover brake cooling oil in the event of brake seal leakage. In addition, the new trucks also have reduced cab noise levels.