Cummins Unveils B7.2 Diesel Engine for Medium-Duty Trucks in North America

Cummins has introduced its latest B7.2 diesel engine, designed for medium-duty and vocational trucks, at the NTEA Work Truck Week in Indianapolis on March 5. This next-generation 7.2-liter powerplant is engineered for higher torque, improved fuel efficiency, and reduced emissions, reinforcing Cummins’ commitment to performance and sustainability.

Enhanced Power and Versatility

The B7.2 engine delivers 240 to 340 horsepower with 650 to 1,000 pound-feet of torque, providing ample strength for a broad range of applications. Scheduled to enter full production in 2027, the engine will be manufactured at Cummins' Rocky Mount, North Carolina facility. By increasing displacement to 7.2 liters, Cummins enhances torque output and operational flexibility, making the B7.2 suitable for various duty cycles and industries.

A New Addition to the HELM Platform

The B7.2 diesel engine is the latest B Series model to be integrated into Cummins’ HELM platform—an initiative launched in 2024 to help customers meet evolving emissions standards. HELM, which stands for Higher Efficiency, Lower Emissions, and Multiple Fuels, enables engines to be adaptable for alternative fuels, supporting businesses in their sustainability efforts.

Cummins’ Vice President of North America On-Highway, Jose Samperio, emphasized the importance of maintaining reliability and performance while developing future-ready power solutions.

"For over 40 years, our customers have depended on the B-Series engine for daily operations," Samperio stated. "The B7.2 continues this tradition, delivering both the durability and efficiency they expect while being built to adapt to future regulations."

Designed for a Wide Range of Applications

The B7.2 diesel engine is built to power a variety of medium-duty and vocational trucks, including buses, pickup and delivery vehicles, utility trucks, refuse haulers, and tow trucks. The engine also meets EPA emissions regulations for light- and medium-duty trucks, which will take effect with model year 2027.

Key Features and Smart Technology

To enhance performance and efficiency, Cummins has equipped the B7.2 engine with advanced features, including:

• Automatic engine shutdown & stop-start technology – reduces carbon emissions and fuel consumption.

• Compression-release engine brake – enhances braking efficiency and extends service life.

• Extended oil-drain-interval pan – minimizes maintenance downtime.

• Acumen smart computing hardware – provides real-time diagnostics and connectivity to advanced digital applications.

• Cummins Maintenance Monitor – ensures optimized service scheduling and uptime.

Continuing the Legacy of the B Series

Cummins’ B-Series engines have long been recognized for durability and efficiency, and the B7.2 continues this legacy with cutting-edge engineering and technology. Brett Merritt, Vice President and President of Cummins’ Engine Business, highlighted the significance of the latest addition to the medium-duty lineup.

"The B engine is a globally recognized workhorse, and we are excited to introduce the B7.2 diesel engine right here in North America," said Merritt. "With its advanced technology, proven reliability, and future-ready design, it provides businesses with the power and dependability they need for years to come."

With the B7.2 diesel engine, Cummins continues to lead in engine innovation, offering customers a versatile, fuel-efficient, and emissions-compliant solution for their medium-duty trucking needs.

Fulian Operation Team

2025.4.2