The Cummins Tier 4 QSB6.7 features a top rating of 300 hp with a maximum torque of 730 lb.-ft. The 6.7 liter engine meets 2011 EPA Tier 4 Interim and EU Stage IIB with 90% lower particulate matter and 45% lower NOx emissions. The QSB6.7 is also fully integrated from Cummins Direct Flow air cleaner to Cummins Particulate Filter aftertreatment.
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