Cummins Unveils the 2025 6.7L Turbo Diesel Pickup Engine for Ram Heavy Duty Trucks
In an exciting collaboration with Ram, Cummins has unveiled its most advanced diesel pickup engine yet—the 2025 6.7-liter Turbo Diesel engine system. This cutting-edge engine is designed to deliver superior power, performance, and efficiency, marking a significant leap in Cummins’ long-standing tradition of excellence. The partnership between Cummins and Stellantis, which also extends through 2030, ensures that Ram trucks will continue to benefit from the innovation and reliability that have made them iconic in the pickup world.
This next-generation engine system will power the newly announced 2025 Ram 2500 and 3500 Heavy Duty Pickups, as well as the Ram 3500, 4500, and 5500 Chassis Cab trucks. With this new release, Cummins is setting new industry benchmarks for power, efficiency, and durability, building on more than 100 years of engineering excellence.
“We’ve raised the bar in power, efficiency, and serviceability with our 6.7L Turbo Diesel engine, making the 2025 Ram Heavy Duty lineup our best yet,” said Jane Beaman, Vice President – Global On-Highway and Pickup at Cummins.
Enhanced Performance and Power
The new 6.7L Turbo Diesel engine is engineered to deliver exceptional performance, boasting high-output ratings of 430 horsepower and 1,075 lb.-ft. of torque for Pickup models, and 360 horsepower with 800 lb.-ft. of torque for Chassis Cabs. Thanks to its advanced engineering, this engine ensures that every Ram Heavy Duty truck is equipped to handle demanding tasks with ease, whether for work or recreation.
The next-gen 6.7L engine is paired with a brand-new 8-speed transmission, delivering optimal power, responsiveness, and drivability. These improvements ensure that the engine not only meets the high expectations of drivers but also exceeds them with refined performance in a wide range of conditions.
“Whether you’re towing a trailer for work or hauling your camper for a weekend getaway, the Cummins 6.7 Turbo Diesel is engineered to tackle it all,” said Jennifer Rager, General Manager – Pickup Business. “Our engineers have integrated critical, versatile, high-performance technologies while reducing emissions, ensuring that this engine system delivers the power customers demand, with greater environmental responsibility.”
The latest updates to the Cummins engine ensure superior acceleration and overall truck performance. Ram 2500 models, for example, now feature quicker 0-60 mph acceleration times and improved quarter-mile speeds, especially when towing heavy loads. These enhancements promise smoother, more responsive driving, providing drivers with added confidence, especially under towing conditions.
In addition, noise, vibration, and harshness levels have been reduced thanks to the integration of helical valve train synchronizing gears. These gears contribute to a quieter and more refined ride, even when the truck is under heavy load, further improving the overall driving experience.
Advanced Features and Emissions Control
The 2025 Cummins 6.7L Turbo Diesel is equipped with advanced emissions air handling systems that include a new airflow management design. Coupled with a high-pressure fuel delivery system featuring top-feed dry service injectors and a new fuel pump, this engine ensures optimized performance and greater fuel efficiency.
One of the key features of the new engine is the integration of Cummins’ next-generation variable-geometry turbocharger. This turbocharger delivers intelligent, condition-based power output that is both faster and more efficient, offering better responsiveness in a variety of driving conditions.
Serviceability and Maintenance Made Easy
In addition to its advanced performance capabilities, the new 6.7L Turbo Diesel engine has been designed for easier servicing. Software updates can now be performed conveniently from inside the truck, eliminating the need for time-consuming trips to the service center.
The engine’s oil filter and dual fuel filters have been strategically positioned for easier access, making maintenance quicker and simpler. This design change reduces the complexity of servicing the engine, ensuring faster turnaround times for customers who need to get back on the road as soon as possible.
Furthermore, the new engine offers significant improvements in cold-start management, thanks to the integration of advanced glow plug technology. This enhancement drastically reduces the wait time to start the engine, ensuring reliable operation even in extreme cold conditions.
A Legacy of Power and Durability
Cummins and Ram have been working together for more than 35 years, setting the standard for diesel power, innovation, and durability. The 6.7L Turbo Diesel is a testament to that long-standing partnership, building on the evolution of Cummins’ engines, which started with the first-generation 5.9L, 160-horsepower engine and has now evolved into a powerhouse 6.7L engine producing up to 430 horsepower.
Manufactured in Columbus, Indiana, the 2025 Cummins 6.7L Turbo Diesel engine continues to push the boundaries of what’s possible in diesel performance, with a focus on delivering power, reliability, and efficiency.
As Cummins and Ram look to the future, the expanded partnership will ensure that the two brands continue to lead the industry in heavy-duty pickup innovation. With a focus on further advancements in engine technology and performance, the 2025 Cummins 6.7L Turbo Diesel engine is just the beginning of what promises to be an exciting new chapter for Ram and its customers.
