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The Proven Champion: the 2017 B6.7

Building on more than 30 years of experience in North America, with a legacy of over 12 million engines sold, the time-tested and proven reliable B Series engine continues to improve with the introduction of the 2017 B6.7. The fifth-generation B Series engine has accumulated over 1.5 million miles of Cummins-led testing in multiple real-world applications, ensuring exceptional uptime from the start.

Even though the B6.7 is a proven champion that commands the highest market penetration of any engine in its class, at Cummins we don’t take anything for granted. Our engineers have made significant enhancements for 2017 in this engine, improving everything from reliability to fuel economy.

This 2017 greenhouse gas (GHG) regulations-compliant engine has two distinct rating series to best meet customer needs without compromise. For customers looking to maximize fuel economy with the lowest possible cost of operation, our efficiency ratings from 200 hp to 260 hp deliver 7 percent better fuel economy over the U.S. Environmental Protection Agency (EPA) 2013 ISB6.7. For more performance-oriented customers who also want great fuel economy, our performance ratings from 280 hp to 325 hp offer up to 5 percent better fuel economy for 2017.

These fuel-economy improvements were achieved through reduced friction within the engine power cylinder, the use of low-viscosity oil, enhanced overall VGT® turbocharger efficiency and increased thermal efficiency with the use of our Single Module™ aftertreatment system from Cummins Emissions Solutions. While the automotive industry tends to downsize engines for improved fuel economy, the 2017 B6.7 offers improved fuel economy without sacrificing the advantages that additional displacement provides.

Cummins has continually stated that there is no replacement for displacement when it comes to drivability, transient response and durability, and at Cummins, we mean what we say. In 2007, the ISB began to incorporate a ribbed block design in addition to expanding its displacement size from 5.9 liters to 6.7 liters. This increased displacement provided a 23.9 percent increase in available peak torque, a 37.9 percent increase in clutch engagement torque and a 41.3 percent increase in peak horsepower. In addition to engine performance benefits, customers saw a reduction in noise and an overall improvement in engine robustness.

With 6.7 liters and 6 cylinders, the 2017 B6.7 does not sacrifice any reliability or durability in order to offer our large range of ratings from 200 hp to 325 hp. The 6.7 liters of displacement provide lower overall pressures on the engine system, and the naturally balanced 6-cylinder configuration provides a better allocation of pressure over more cylinders. Additionally, our high power-to-weight ratio allows performance-oriented customers to achieve their missions in a timely and efficient manner.

For additional details, check out B6.7 brochure or visit

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