Diesel B-Series Ultra Low Emissions

Power Range
38-50 kVA 60 Hz
3.3 litre 4 cylinder

The B3.3 has all the strength and reliability the genset industry has come to expect from the B Series range but in a smaller, lighter and more economical package. The B3.3  incorporates Cummins proven technology enablers to meet EPA Tier 4 Interim low emissions standards and features indirect fuel injection, resulting in cleaner, quieter and more fuel efficient performance. With a highly compact 4 cylinder envelope and extremely low heat-rejection, the engine offers a high degree of installation flexibility.

All backed by the best customer support in the business.


Stanadyne Fuel Pump – Rotary fuel pump with indirect injection for cleaner, more efficient fuel consumption.

Parent Bore Block - Deep, stiff crankcase and optimised rib arrangement to enhance strength and reduce noise.

12 volt electrics package as standard, with starter, alternator and fuel solenoid.

Minimal derate for high altitude or high ambient applications.

Shallow oil pan and single spin-on oil filter.

SAE ‘4’ flywheel housing.

Integrated Design - 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 leader in innovative emissions solutions that focus on in-cylinder design improvements and advanced after-treatment solutions to eliminate most of the NOx, HC and PM to meet EPA Tier 4 interim emission requirements.

Hz: n/a
Model rpm Hz Prime kVa Standby kVa Prime kWe Standby kWe Emissions PDF
4BT3.3-G5 n/a n/a 45.0 50.0 36.0 40.0 Non Regulated 4BT3.3-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.