Cummins is standing strong in the world of gas-powered engines, revealing two new offerings that can power your school bus.

The B6.7 Octane and B7.2 diesel engines are coming to the market, with the B7.2 planned to go into full production in 2027. While the B7.2 is the evolution of the B series diesel engines, the B6.7 Octane is the company’s first advancement into the gasoline market.

Introducing the B6.7 Octane

The B6.7 Octane uses standard 87-octane gasoline and requires less maintenance with its passive three-way catalyst and no need for diesel exhaust fluid.

Offering between 200 and 300 horsepower and 660 lb-ft. of torque, the B6.7 Octane provides dependable power and up to 10% better fuel economy over other gasoline-powered engines. It is also EPA 2027 certified, making it a safe investment when considering upcoming vehicle purchases.

With two million real-world testing miles across various applications and duty cycles, this engine has been proven to be durable and dependable.

This engine is designed for medium-duty and vocational applications, including usage in school buses.

Looking at the B7.2 Diesel Engine

When it comes to diesel engines, the B7.2 is Cummins’ next iteration of their B-Series engine platform. As the next engine in the B series Cummins HELM platform, the B7.2 will continue to serve a variety of medium-duty and vocational applications, including school buses.

With a slightly higher displacement of 7.2 liters, the new engine is designed to be a global platform that will allow customers to ensure their vehicles are ready for the future without sacrificing performance or durability. The higher displacement will also allow for a wider range of torque offerings.

With 240 to 340 horsepower and 650 to 1,000 lb.-ft. of torque, the B7.2 improves unrestricted top-end performance ratings.

To meet stricter greenhouse gas emissions guidelines, the B7.2 has automatic engine shutdown and start-stop capabilities. It will also have a compression-release engine brake and extended oil drain interval pan options.

Cummins’ full suite of digital technologies which help enhance performance, maximize uptime, and reduce total cost of ownership, will be compatible with the engine. It 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 such as predictive capabilities and advanced over-the-air features with the B7.2. It is also Cummins Maintenance Monitor capable, which can reduce shop visits and minimize the cost of operation.

You can find all school bus engine specs in our Fact Book.