Cummins launches new 6.7L Turbo Diesel pickup engine system for 2025 Ram heavy-duty trucks
Alongside its partners at Ram, Cummins recently unveiled the new 2025 6.7L Turbo Diesel Pickup engine system for Ram Heavy Duty. As part of this, Cummins and Stellantis have extended their partnership to supply Ram Brand through 2030.
Cummins’ 6.7L Turbo Diesel advanced engine system and powertrain will be offered in the recently announced 2025 Ram 2500; 3500 heavy-duty pickups; and Ram 3500, 4500, and 5500 chassis cab trucks.
“We’ve improved the power, efficiency, serviceability, and driveability of our latest 6.7L Turbo Diesel engine, making the 2025 Ram Heavy Duty lineup the most desirable yet,” said Jane Beaman, VP of global on-highway and pickup at Cummins.
Cummins’ latest offering delivers enhanced performance alongside high-output ratings of 430hp and 1,075 lb.-ft. of torque for pickups and 360hp and 800 lb.-ft. of torque for chassis cab. In collaboration with Ram and its powertrain providers, the 2025 Cummins 6.7L Turbo Diesel engine is optimized with a brand-new 8-speed transmission, providing the right combinations of power, responsiveness, and driveability.
“Whether you are towing heavy loads for work or pulling your weekend camper, Cummins 6.7L Turbo Diesel is ready for any project. Our engineers have integrated critical, yet versatile, high-performance engine technologies that customers expect at lower emissions,” said Jennifer Rager, Cummins GM of pickup business. “We’re thrilled to continue our partnership with Ram Brand and introduce the best diesel pickup engine in the industry.”
All 2025 Ram Heavy Duty truck models powered by Cummins received noticeable gains in acceleration and power, driving home stronger overall truck performance and towing capability.
The Ram 2500 gained improvements in towing speeds and responsiveness, with faster 0-60 mph and quarter-mile times, especially when towing heavy loads. These enhancements promise drivers smoother transient responses and greater confidence under towing conditions. Noise, vibration, and harshness were also improved using helical valve train synchronizing gears, which enable a quieter ride.
The latest power offering for pickups and chassis cab from Cummins includes advanced emissions air handling that also introduces a new airflow management design. This accompanies a new high-pressure fuel delivery system that offers top-feed dry service injectors and a new fuel pump. Cummins’ newest variable-geometry turbocharger for the new 6.7L delivers intelligent condition-based power output that is now faster and more efficient.
Cummins has also introduced new features that make it easier to service the engine system and get back on the road. Software updates can now be executed from the comfort and convenience of inside the truck. In addition, the oil filter and dual fuel filter are now positioned to enable serviceability from the top side of the engine, improving the ease of maintenance—resulting in faster and less complex servicing for the 2025 Cummins 6.7L Turbo Diesel.
Additionally, the Cummins 6.7L Turbo Diesel pickup and chassis cab engine systems offer improved cold-start management with the integration of advanced glow plug technology. By reducing the wait-to-start time, this enhancement ensures reliable vehicle operation even in the harshest and most extreme weather conditions.
Other 2025 Ram lineup upgrades
- 36,610 lb. max towing
- 7,590 lb. max payload
- Most advanced Uconnect system
- Available 12-inch or 14.5-inch touchscreen display
- On-board power inverter
