Cummins QSB3.3 doesn't just contradict conventional thinking about compact power - it rewrites the rules. The QSB3.3 delivers up to 110 horsepower (82 kW) in a much smaller and lighter package than any comparable 4.0- to 4.5-liter engine. Plus, it has the inherent durability you've come to expect from larger Cummins engines.

Cummins next generation 4-cylinder QSB3.3 engine will meet U.S. EPA Tier 4 Interim and EU Stage IIIB off-highway low emission standards in 2012 with our proven, award winning 3.3-liter engine platform with a fully integrated system from air-intake to exhaust aftertreatment. The QSB3.3 achieves these very low emission standards by using our proven cooled Exhaust Gas Recirculation (EGR) and Cummins Particulate Aftertreatment.  Both systems have been specifically developed to maintain the compact design of the QSB3.3 ensuring the most space efficient installation.