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.

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. As part of this, Cummins and Stellantis have extended their partnership to supply Ram Brand through 2030,

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.

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

The Ram brand of Stellantis in Auburn Hills has unveiled its new 2025 fleet of heavy-duty trucks, which it says offers a “combination of exceptional comfort, innovation, technology and capability.”

Stellantis has redesigned its large Ram heavy-duty trucks, which are expected to arrive at dealers in the first quarter of this year and will start at $47,560.

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 2500 and 3500 Heavy Duty are hitting dealerships soon, and Ram kept one of their most essential features alive and even more powerful.

We got a peek at the refreshed 2025 Ram HD back in September. That was purely an aesthetic teaser, though. Now we have all the details, including updates to the V-8 and diesel powertrains, as well as pricing.