2026 RAM 2500 Cummins Diesel Specs & Features

For those who need true power and capability, the incredible RAM 1500 might just not be enough. That’s why RAM also provides heavy-duty pickup truck alternatives to the full-size, light-duty 1500, such as the 2026 RAM 2500. The standard RAM 2500 features a powerful V8 HEMI powertrain, but even that might not be enough for some of you who need the king of all workhorses, and that’s where the High-Output 6.7L Cummins Turbo Diesel I6 engine comes into play. Today, we’re going to highlight the specs of this incredible powertrain plus other features and tech that make the 2026 RAM 2500 one of the most capable trucks on the market.

The 6.7L Cummins engine was designed specifically for drivers that require relentless pulling power without sacrificing any durability. It’s tethered to a TorqueFlite HD eight-speed automatic transmission and your choice of a 4x2 or 4x4 drivetrain to complete the powertrain, ensuring seamless power delivery, low vibration, and intuitive shift mapping regardless of your load status.

• Horsepower – 430 hp
• Peak Torque – 1,075 lb-ft
• Fuel Capacity – Up to 50 gallons

Its fuel tank happens to be the largest in the class on Crew Cab models with an eight-food bed. Likewise, 1,075 pound-feet of torque is the best-in-class for diesel trucks, giving you immediate throttle response and low-RPM pulling power when launching heavy trailers on steep inclines.

We’ve covered the specs of the powertrain, but now it’s time to dive into some of the features and tech found throughout the rest of the vehicle that makes towing and hauling easier.

• Class-Exclusive Auto-Level Rear Air Suspension – Available system featuring Bed Lowering Mode, dropping the rear suspension to its lowest position for effortless trailer hookups.
• Braking Power – Heavy-duty four-wheel disc antilock brakes paired with an available Automatic Smart Exhaust Brake for controlled speed management on downhill grades.
• Dedicated Off-Road Capability – Available factory-installed 12,000-pound WARN front electric winch and underbody skid plates on models like the RAM 2500 Rebel.
• Camera Systems – Available 360° Trailer Surround View Camera for a complete bird’s-eye perspective around the truck and attached trailer.
• Trailer Reverse Steering Control – Allows drivers to guide trailer trajectory via a center-stack knob while the system automatically manages steering wheel inputs.
• Live Monitoring – Available Trailer Tire Pressure Monitoring tracking pressure data for up to four trailers, displayed on the available 12” Digital Cluster.