Cummins Tier 4 Final Four-Cylinder Engines

Four-cylinder product line spans from 49 to 173 hp and is fully integrated with exhaust aftertreatment systems designed and manufactured by Cummins Emission Solutions

QSF2 8 QSB4 5 Hi Tier4 56cc8cc603c1b

Cummins' full Tier 4 Final four-cylinder product line, including the QSF2.8 (49 to 74 hp), QSF3.8 (74 to 130 hp) and QSB4.5 (113 to173 hp) offer simplified technology that allows for compact installation packages, making them well-suited for space-constrained construction and material-handling equipment.

  • Fully integrated with exhaust aftertreatment systems designed and manufactured by Cummins Emission Solutions
  • Aftertreatment size and technology can be precisely matched to engine output and intended equipment type


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