Cummins Inc.

QSB3.3 Tier IV Interim Engine

The Tier 4 Interim QSB3.3 four-cylinder, 3.3-liter engine features an 11% power increase with a top rating of 120 hp.

  • Cummins Compact Catalyst removes particulate matter by oxidation with simple exhaust flow-through operation
  • High Pressure Common Rail fuel system and full-authority electronic controls
  • Cooled Exhaust Gas Recirculation (EGR) system driven by a single variable-flow turbocharger
  • Fuel efficiency improved by up to 5%, depending on duty cycle.

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