Cummins today announced an update to the legendary B-Series engine platform, unveiling the new Cummins B7.2 diesel engine at NTEA Work Truck Week in Indianapolis, Indiana.

"Our B engine is a legend known around the world. We are proud to unveil the newest version, the B7.2 diesel engine, right here in our backyard," said Brett Merritt, vice president and president Engine Business. "The B7.2 brings the latest technology and advancements to one of our most proven platforms. Combined with the rest of our medium-duty lineup, our customers will have the right engine choices to fit their business needs, with the power and dependability they have come to expect from Cummins."

The B7.2 diesel is the next engine in the B series HELM TM platform, following the B6.7 Octane engine. It will bring state-of-the-art technology and continue to serve a variety of medium-duty and vocational applications, including bus, pickup and delivery, utility trucks, refuse, towing, and more.

B7.2 Increases Displacement

The new engine increases displacement to 7.2L and is designed to be a global platform that allows customers to ensure their vehicles are ready for what's to come without sacrificing performance or durability. Cummins said the higher displacement also allows for a wider range of torque offerings, creating flexibility for different applications and duty cycles.

"Our customers have used the B-Series engine for more than 40 years and rely on it every day to meet their needs," said Jose Samperio, vice president — North America On-Highway. "It was important that we offer the reliability and performance that they have come to expect, while also creating an engine that is built to last for the future."

More Details for the Cummins B7.2

The B7.2 will improve unrestricted top-end performance ratings, providing 240 to 340 hp and 650 to 1,000 lb.-ft of torque.

Additionally, the new engine will be automatic engine shutdown and stop-start capable for improved greenhouse gas emissions and will offer a compression release engine brake and extended oil drain interval pan option.

It will also be equipped with Cummins' full suite of digital technologies to help enhance performance, maximize uptime, and reduce the total cost of ownership. 

The B7.2 provides digital connectivity and immediate access to a range of applications and capabilities through Acumen@, Cummins' smart computing hardware, and OEM first-fit solutions. 

Customers can utilize digital tools that enhance driver experience, including predictive capabilities (prognostics) and advanced over-the-air features. B7.2 is also Cummins Maintenance Monitor capable, reducing shop visits and minimizing cost of operation.

The B7.2 engine will be manufactured at Rocky Mount Engine Plant in North Carolina and will go into full production in North America starting in 2027. Find out more about the B7.2 and Cummins' other mid-range line-up this week at NTEA Work Truck Week.

Other Cummins Engines at Work Truck Week

The Cummins display features three additional all-new engines, including the Xl 0 diesel, the B6.7 Octane, and the 6.7L Turbo Diesel for heavy-duty pickups.

Versatility to the fullest: Xl O

Cummins is redefining performance and efficiency with the Xl 0, a heavy-duty, mid-bore engine designed to tackle the toughest jobs. Delivering up to 450hp and 1 ,650 lb-ft of torque, the Xl 0 is built for versatility — powering a wide range of applications with the reliability and durability customers expect from Cummins.

Built off the proven L9 and Xl 2 platforms, the Xl 0 brings efficiency, dependability and innovation to the next level. Whether for vocational, regional-haul, transit bus or other demanding applications, the new mid-bore workhorse is ready to perform. 

Gasoline Dependability: B6.7 Octane

Cummins is showcasing its first advancement into the gasoline market with the B6.7 Octane. Built from decades of experience in medium-duty, it is equipped with power, durability and diesel-like performance while adding the convenience and simplicity of gasoline.

This engine offers up to 300 horsepower and 660 lb-ft of torque, providing customers with dependable power and up to 10% better fuel economy over other gasoline-powered engines. The B6.7 Octane uses standard 87 octane gasoline and requires less maintenance with a simple, passive three-way catalyst and no need for DEF (diesel exhaust fluid).

Validated by up to two million real-world testing miles across various applications and duty cycles, Cummins B6.7 Octane is durable and dependable in customers' hands. 

New 2025 6.7L Turbo Diesel for Heavy-Duty Pickup Trucks

Cummins's new 2025 6.7L Turbo Diesel, unveiled in January this year, will also be on display at Work Truck Week.

"We've designed our engines to perform the jobs our customers need from their work trucks. We've also made the new 6.7L Turbo Diesel fun to drive with 430 horsepower and 1 ,075 lb.-ft. of torque for pickups, and 360 horsepower and 800 lb.-ft. of torque for chassis cabs. We're proud to continue our legacy of delivering the best of both worlds which we've done for more than 35 years," said Jane Beaman, vice president — Global On-Highway and Pickup at Cummins.

Cummins' new 6.7L Turbo Diesel powers all of Ram Truck's Heavy-Duty diesel lineup, which Ram will also display at Work Truck Week.