Cummins unveiled a new 2025 6.7-liter Turbo Diesel Pickup engine system for Ram Heavy Duty, along with its partners at Ram, on Wednesday.

The new lineup of Ram HD trucks just got extra beefy thanks to an improved diesel engine. The Cummins 6.7-liter turbo diesel is about to change the heavy-duty game. 2025 Ram HD trucks have a new diesel engine The entire 2025 Ram HD truck lineup is available with a reworked Cummins diesel engine.

The engine maker's new 6.7-liter Turbo Diesel for Ram Heavy Duty's line of pickups and cab-and-chassis trucks comes with news of an extended Cummins/Ram diesel partnership through 2030.

The 430-horsepower Cummins Turbo Diesel delivers a 70% rise in torque. The diesel option is offered on Ram 2500 and 3500 HD and 3500, 4500, 5500 Chassis.

Ram heavy-duty truck lineup unveiling also served as the first phase of a comeback tour for former CEO Tim Kuniskis.

After getting booted from the 2025 Ram 1500 lineup, the 6.4-liter Hemi V8 engine carries on for the 2025 2500 and 3500 lineups with 405 horsepower and 429 lb-ft of torque. This mi

Here's what’s new from Ram’s lineup of heavy haulers, including a refined powertrain, interior upgrades, advanced technology features, and Cummins turbo diesel engine.

Discover the new 2025 Ram 2500 and 3500 Heavy Duty trucks featuring advanced towing capabilities, innovative technology, and powerful engines.

Following last year's update of the light duty Ram 1500, the heavy duty Ram trucks get a refresh for 2025 with a redesigned Cummins 6.7L diesel and more tech

Ram's heavy-duty pickups will continue to offer V8 power in the US, but the real news is an overhauled turbo-diesel inline six.

Ram's heavy-duty trucks receive a comprehensive refresh that includes new exterior styling and interior upgrades.