At Agritechnica 2025, Cummins is once again presenting its 4.5-litre structural engine for tractors, alongside the well-established and reliable “B6.7” and “Next Gen X15” units. This range confirms the multi-technology approach of a brand that has always been focused on achieving maximum efficiency, developing modular fuel-agnostic solutions, and engineering electric driveline axles through its Meritor brand
At Agritechnica 2025, Cummins reaffirms its presence in the agricultural segment by presenting a lineup of powertrains designed to address the new challenges of mechanization—an environment where efficiency, reliability, and integration are fundamental requirements for the success of any operational solution. To meet these needs, the U.S. company, with more than a century of experience in engine manufacturing, showcased in Hannover a complete line of engines and integrated solutions, starting with the “4.5” structural diesel engine and continuing with the proven “B6.7” units and the new “Next Gen X15.”
The Cummins 4.5 L Structural Engine was developed to respond to the growing demand for compact, efficient engines that are easy to integrate into the load-bearing architectures of mid-power tractors. Produced at the Darlington plant in the United Kingdom, it is positioned in the 130 to 160 horsepower range (95 to 120 kW), offering best-in-class power and torque density. The structural layout allows the engine to be used as a load-bearing element of the chassis, simplifying design and reducing overall machine weight. The torque curve is optimized to deliver strong low-speed response and fast transient performance under variable loads, with low specific fuel consumption thanks to efficient combustion and a state-of-the-art injection system.
The 4.5 L engine is also available with different after-treatment configurations to ensure easy installation on any type of machine while maintaining compliance with global emissions regulations. The Flex Module system, presented in Hannover in combination with the engine, integrates DOC, DPF, and SCR filters in a modular architecture that can be installed under the hood or above the engine, with a vertically orientable SCR module to reduce the overall height of the unit. The use of the high-flow UL2 urea dosing system ensures precision and reliability in controlling nitrogen oxide emissions, while passive DPF regeneration reduces the need for scheduled maintenance interventions.
Alongside the 4.5 L, Cummins also showcased the already well-known B6.7 and Next Gen X15 engines, two pillars of the American brand’s off-highway portfolio. The B6.7 is currently the most widely used engine in the entire Cummins portfolio, appreciated for its application versatility and proven robustness, with recent adoption by Claas on the Evion combine harvester series and by Versatile on its tractors. The Next Gen X15 represents the technological pinnacle of Cummins’ high-power offering. Available in calibrations exceeding 500 kW, it stands out for its thermodynamic efficiency, low operating costs, and digital integration with telemetry systems.
As an integral part of the Helm fuel-agnostic platform, the X15 is designed to adapt to different fuel types—diesel, HVO biofuels, and hydrogen—thanks to a modular architecture that allows the cylinder head and a few other components to be replaced to switch from one fuel system to another. The hydrogen-powered version represents one of the most concrete steps toward decarbonizing high-performance engines in the agricultural sector.
Completing Cummins’ presence in Hannover was the Meritor Mox E8 axle, developed for tractors, combine harvesters, and balers operating under the most demanding conditions. Based on a modular architecture, the E8 combines a robust structure with high customization flexibility, ranging from drum or disc brakes to specific reduction ratios and different wheel hub configurations. The goal is to provide machine manufacturers with an integrable, compact, and application-configurable component, reducing development time and production costs.
Title: Cummins Engines: solutions for the power of tomorrow
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