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,

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.

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.

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