Whether you're building a skyscraper or paving the Interstate, Cummins power helps you meet every deadline. With power you can count on, in every piece of equipment and on every job site everywhere around the globe. And because each engine can be custom-engineered to adapt to specific load and work environment factors, you get optimized performance the first time, every time.

QST30 Powers the biggest construction equipment, and tackles the biggest jobs. Advanced electronics deliver exceptional performance and durability with low maintenance and operating costs. Ratings range from 760-1200 hp (567-895 kW).

QSK23 Whether you are powering new equipment or repowering an excavator, loader or road paver, the QSK23 delivers high performance and long-range durability with low maintenance and operational costs, every day. Ratings range from 760 to 950 hp (567-708kW).

QSK19 These powerful engines with state-of-the-art electronics are designed to give every bulldozer, grader and excavator maximum performance with minimum maintenance. Ratings range from 755 to 800 hp (563-597 kW).

QSX The unique dual overhead cam design of the QSX allows the engineers at Cummins to optimize combustion efficiency. Ratings range from 350-635 hp (261-474kW).

C8.3 The C8.3 with mechanical fuel injection is one of the most versatile and successful engines in every kind of construction equipment, in use everywhere around the globe. Ratings are available from 215-340 hp (160-254 kW).

B Series Our mechanical B series engines are small enough to fit the equipment but big enough to handle the job. Three different models are available, the four-cylinder B3.9 and B4.5 plus the 6-cylinder B5.9. Ratings range from 80-173 hp (60-129 kW).

B3.3
Cummins B3.3 engine brings toughness and reliability to every piece of equipment they power, from tractors to irrigation pumps.  Its in-line 4-cylinder design has a compact footprint for easy installation.  Ratings range from 60-85 hp, with both naturally aspirated and turbocharged versions.