Diesel QSB-Series

Power Range
63-220 kVA 50 Hz / 55-200 kWe 60 Hz
4.5/6.7 litre 4/6 cylinder
A powerful performer.

 With greater engine manipulation capabilities, the QSB-Series is one of the cleanest on the market, reaching EPA T3/EU Stage IIIA at both 1500rpm and 1800rpm. These new Quantum system engines, featuring a common rail fuel system, combine proven full-authority electronic controls with powerful performance even in the most demanding applications.


Full-Authority Electronic Controls - Optimize engine operation and deliver critical information for controlling costs, reducing maintenance and seamless integration with other components.

Holset HX35 Wastegated Turbo - Wastegated design optimizes transient response.

Low-Maintenance Fuel Filter Assembly - The fuel filter incorporates an integral water separator and water-in-fuel sensor; 500-hour filter life with easy top-load replacement using standard Fleetguard® filters.

Coolpac Integrated Design - Products are supplied complete with cooling package and air cleaner kit for a complete power package. Each component has been specifically developed and rigorously tested for  G-Drive products, ensuring high performance, durability and reliability.

Service and Support - G-Drive products are backed by an uncompromising level of technical support and after sales service, delivered through a world class service network.


To protect public health and conserve our planet's natural resources, legislation from the U.S. Environmental Protection Agency (EPA) and regulatory agencies in the European Union (EU) has, for the past decade, required that pollutants produced by diesel engines - such as nitrogen oxides (NOx), hydrocarbons (HC) and particulate matter (PM) - be reduced.

Throughout this time, Cummins Inc. has been at the forefront of the move to meet these new standards, becoming:

  • the first manufacturer to introduce EPA Tier-2 and Tier-3 products to the market - ahead of the regulatory deadline;
  • the first manufacturer to introduce EU Stage IIIA compliant generator-drive diesel engines to Europe;
  • the leader in innovative emissions solutions that focus predominantly on in-cylinder design improvements to eliminate most of the NOx, HC and PM before they are formed.

As a result, our diesel engines are not only very clean, but also retain all of their performance advantages without exhaust after treatment strategies that add cost and complicate maintenance for end users.

G-Drive Engines

  • Mid-range (1.3 - 9L) medium-horsepower engines (16 to 476 hp), providing the broadest Tier 3 range which further reduce Tier 2 NOx levels by 38%
  • Heavy duty (11 - 15L) 415 to 755 hp engines powering commercial operations
  • High-horsepower (19 - 78L) 675 to 3700 hp at both 1500 and 1800 rpm, designed to meet Tier 2/Stage II emissions requirements for electronics and diagnostics, base engine and turbocharging, power cylinder and fuel systems
Hz: 50
Model rpm Hz Prime kVa Standby kVa Prime kWe Standby kWe Emissions PDF
QSB5-G2 1500 50 72.0 80.0 58.0 64.0 EU Stage IIIA, EPA Tier 3 QSB5-G2.pdf
QSB5-G3 1500 50 82.0 90.0 66.0 72.0 EU Stage IIIA, EPA Tier 3 QSB5-G3.pdf
QSB5-G4 1500 50 91.0 100.0 73.0 80.0 EU Stage IIIA, EPA Tier 3 QSB5-G4.pdf
QSB5-G5 1500 50 100.0 110.0 80.0 88.0 EU Stage IIIA, EPA Tier 3 QSB5-G5.pdf
QSB5-G6 1500 50 136.0 150.0 109.0 120.0 EU Stage IIIA, EPA Tier 3 QSB5-G6.pdf
QSB7-G3 1500 50 150.0 175.0 120.0 140.0 EU Stage IIIA, EPA Tier 3 QSB7-G3.pdf
QSB7-G4 1500 50 180.0 200.0 144.0 160.0 EU Stage IIIA, EPA Tier 3 QSB7-G4.pdf
QSB7-G5 1500 50 200.0 220.0 160.0 176.0 EU Stage IIIA, EPA Tier 3 QSB7-G5.pdf

Specifications based on typical generator set output. For full specifications, view the PDF for a specific model above.


Cummins Power Generation provides the best warranty and extended warranty plan in the industry. You can expect Cummins Power Generation and its authorized warranty locations to:

  • Stand behind Cummins Power Generation products.
  • Repair all failures that are a result of defects in materials or factory workmanship by Cummins Power Generation, or arrange for OEM warranty service if component is from another manufacturer.
  • Provide the benefit of the coverage immediately.
  • Treat all customers fairly and consistently.

For specific information regarding your warranty, or for more information regarding our warranties contact your nearest distributor.