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

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,

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.

As in previous years, Ram offers the 2025 Heavy Duty in three cab configurations (regular, extended, and crew) and two cargo bed lengths. Trim levels include Tradesman, Big Horn, Lone Star (available only in Texas), Power Wagon, Rebel, Laramie, Limited Longhorn, and Limited.

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.

January 7, 2025 \| Last updated: January 7, 2025. The updated 2025 Ram Heavy Duty and Chassis Cab trucks have been revealed wi