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

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.

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.

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.”

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.

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.

Following the introduction of the refreshed, light-duty 2025 Ram 1500 pickup, Stellantis has unveiled the updated 2025 Ram Heavy Duty (HD), highlighted by a more powerful available 6.7-liter Cummins high-output turbocharged diesel engine paired with a new heavy-duty eight-speed automatic transmission.

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.

Returning Ram CEO Tim Kuniskis has his first big announcement following his recent Stellantis comeback: an upgraded Ram 2500 and 3500 heavy duty lineup, as well as the chassis cab models. The biggest Ram trucks come with an upgraded Cummins diesel and "the potential of 1,