The Cummins B-series diesel engine platform is one of the most successful medium-displacement powertrain families in global commercial vehicle and off-highway machinery history. Derived from the classic ISB5.9 platform, ISB6.7 and QSB6.7 share the same 6.7-liter inline-six architecture but are developed for differentiated application scenarios: ISB6.7 targets on-highway medium-duty trucks, coaches and transit buses, while QSB6.7 serves off-highway equipment including excavators, loaders, agricultural machinery and stationary power units. Although the two models adopt many common core mechanical components, their calibration strategies, turbocharging layouts, electronic control modules, aftertreatment configurations and durability reinforcement designs are significantly differentiated to adapt to highway cyclic driving and variable heavy-load off-road working conditions. This paper systematically reviews the technical evolution of the B-series platform, compares structural parameters, c

Brakes are among the most important components on any vehicle. Regardless of application, choosing the right brakes for your fleet will ensure vehicle safety and performance for on- and off-road conditions. However, there is no one-size-fits-all solution. Whether you are specifying a new vehicle or upgrading an existing brake system, the right choice depends on your application, environment, and maintenance priorities.

A truck traveling 120,000 miles a year experiences millions of small impacts along the way. Every pothole, rough patch of pavement and shifting load sends stress through the vehicle. The suspension system absorbs that stress while helping keep the truck stable and controlled.

Technology pushes our world forward at an exponential rate. New industries emerge and thrive; old industries evolve and expand. Growing energy demand drives smarter, more resilient power solutions, helping businesses reduce emissions without compromising reliability. And Cummins is leading the charge.