2027 Ram 2500 Power Wagon Diesel Specs
The 2027 Ram 2500 Power Wagon Diesel is one of the biggest heavy-duty truck stories in years because Ram finally did what Power Wagon fans have asked for: it put a Cummins diesel engine in the Power Wagon.
For the first time, the Ram Power Wagon is available with the 6.7-liter Cummins High-Output turbo diesel inline-six.
Ram says the new diesel Power Wagon makes 430 horsepower and 1,075 lb-ft of torque, giving the off-road-focused 2500 a massive torque advantage over the gas-powered 6.4L HEMI version.
The 2027 Ram Power Wagon with Cummins turbo diesel is scheduled to arrive in the second half of 2026, with a starting price of $88,470 including destination.
That makes this truck more than just another appearance package.
It is a major shift for the Power Wagon because it combines Ram’s heavy-duty diesel torque with the Power Wagon’s off-road hardware, locking differentials, suspension upgrades, underbody protection, and trail-focused design.
Quick Specs: 2027 Ram 2500 Power Wagon Diesel
| Category | 2027 Ram 2500 Power Wagon Diesel |
|---|---|
| Engine | 6.7L Cummins High-Output turbo diesel inline-six |
| Horsepower | 430 hp |
| Torque | 1,075 lb-ft |
| Transmission | TorqueFlite HD 8-speed automatic |
| Drivetrain | 4×4 |
| Cab / Bed | Crew Cab with 6-foot-4-inch bed |
| Rear Axle Ratio | 3.42:1 |
| Fuel Tank | 31 gallons |
| Estimated Range | Up to about 600 miles |
| Towing Capacity | Nearly 20,000 lbs |
| Payload Capacity | Almost 3,000 lbs |
| Ground Clearance | 13.2 inches |
| Approach Angle | 26.1 degrees |
| Departure Angle | 26.0 degrees |
| Breakover Angle | 20.6 degrees |
| Wheels | 20-inch Satin Black wheels with machined accents |
| Tires | 34-inch all-terrain tires |
| Starting Price | $88,470 including destination |
| Availability | Second half of 2026 |
Ram has not published final exact towing and payload numbers yet, so “nearly 20,000 pounds” and “almost 3,000 pounds” are the official capability ranges currently available.
The Big News: Cummins Diesel Power
The headline feature is the 6.7L Cummins High-Output turbo diesel inline-six. This engine gives the Power Wagon the kind of low-rpm pulling power many buyers always wanted but could not get from the traditional gas-only Power Wagon.
The diesel engine produces:
| Engine | Horsepower | Torque |
| 6.7L Cummins HO Turbo Diesel I6 | 430 hp | 1,075 lb-ft |
| 6.4L HEMI V8 Gas | 405 hp | 429 lb-ft |
The diesel makes only 25 more horsepower than the current gas V8, but the real difference is torque.
The Cummins produces more than double the torque of the 6.4L HEMI, which should make a major difference when towing, hauling, climbing grades, and moving heavy loads at low engine speeds.
Ram lists the gas-fed 6.4L HEMI at 405 horsepower and 429 lb-ft, while the new Cummins Power Wagon is rated at 430 horsepower and 1,075 lb-ft.
This is also not an older carryover diesel. Cummins introduced this newer 6.7L turbo diesel pickup engine system for the 2025 Ram Heavy Duty lineup, calling it its most advanced diesel pickup engine at launch.
Cummins said the updated engine improved power, efficiency, serviceability, and drivability, and the company also extended its Ram supply partnership through 2030.
Transmission and Axle Ratio
The 2027 Ram 2500 Power Wagon Diesel uses the TorqueFlite HD 8-speed automatic transmission.
Ram pairs it with a 3.42:1 rear axle ratio, a setup designed to balance towing performance, highway refinement, and fuel efficiency.
Ram says this setup gives the diesel Power Wagon a higher final-drive ratio in gears one through six for confident towing and acceleration, while gears seven and eight help reduce engine noise and improve highway efficiency.
That matters because this truck is not just about trail crawling. With nearly 20,000 pounds of towing capacity, Ram clearly wants the diesel Power Wagon to work as both an off-road truck and a serious heavy-duty tow rig.
Towing Capacity: Nearly 20,000 Pounds
The 2027 Ram 2500 Power Wagon Diesel is rated to tow nearly 20,000 pounds, according to Ram.
That is a huge jump compared with the gas Power Wagon, which has historically been limited by its off-road suspension, tires, and gas-engine torque.
This is where the Cummins engine completely changes the truck’s mission.
The previous gas Power Wagon was excellent off-road but not the strongest choice for heavy towing.
The diesel version gives buyers a much better combination of trail hardware and real heavy-duty capability.
Ram also adds equipment that makes the diesel Power Wagon more useful for serious trailer owners.
For the first time, the Power Wagon Diesel can be optioned with fifth-wheel/gooseneck preparation and Automatic-Leveling Rear Air Suspension.
That is a major upgrade because fifth-wheel and gooseneck compatibility pushes the Power Wagon closer to traditional Ram 2500 capability while keeping the Power Wagon’s off-road identity.
Payload Capacity: Almost 3,000 Pounds
Ram says the 2027 Power Wagon Diesel has a payload capacity of almost 3,000 pounds.
That opens the door for heavier gear setups, bed storage systems, tools, overlanding equipment, and potentially some slide-in camper configurations, depending on final door-jamb payload ratings and how the truck is optioned.
Payload is one of the biggest practical reasons this truck matters.
A traditional Power Wagon is incredibly capable off-road, but its softer off-road suspension and gas powertrain made it less attractive for buyers who wanted to tow and haul near the upper end of the heavy-duty segment.
The Cummins model narrows that gap.
Fuel Tank and Driving Range
The 2027 Ram 2500 Power Wagon Diesel comes with a 31-gallon fuel tank. Ram estimates the truck can deliver up to 600 miles of range, depending on driving conditions, load, terrain, and usage.
That is a major benefit for overlanding and remote travel. A Power Wagon is built for rough terrain, but range matters when you are towing into the mountains, exploring backroads, or traveling far from fuel stations.
Ram has not released official fuel economy numbers for the 2027 Power Wagon Diesel.
Heavy-duty pickups are not typically marketed with the same EPA fuel economy labels as light-duty trucks, so buyers should focus on real-world diesel range, towing efficiency, and fuel tank size instead of expecting a traditional window-sticker MPG figure.
Off-Road Hardware
The diesel Power Wagon keeps the core hardware that makes the Power Wagon special.
Ram says the 2027 Power Wagon Diesel includes:
| Off-Road Feature | Included |
| Front electronic-locking differential | Yes |
| Rear electronic-locking differential | Yes |
| Mechanical anti-slip rear function when unlocked | Yes |
| Bilstein monotube shocks | Yes |
| Electronic disconnecting front stabilizer bar | Yes |
| Five-link coil rear suspension | Yes |
| Solid front and rear axles | Yes |
| Underbody skid plates | Yes |
| Hill Descent Control | Yes |
| Mopar accessory rock rails | Yes |
Ram says the axles are built by American Axle Manufacturing and measure 9.25 inches in the front and 11.5 inches in the rear.
The rear axle shafts are upgraded to 38 mm, helping send the diesel engine’s torque to the 34-inch tire and wheel package.
The truck also keeps the Power Wagon’s electronic disconnecting front sway bar, which allows more front axle articulation off-road.
That is one of the key features separating the Power Wagon from a regular Ram 2500 4×4.
Ground Clearance and Angles
The 2027 Ram 2500 Power Wagon Diesel is still built for serious off-road use.
| Measurement | 2027 Power Wagon Diesel |
| Ground Clearance | 13.2 inches |
| Approach Angle | 26.1 degrees |
| Departure Angle | 26.0 degrees |
| Breakover Angle | 20.6 degrees |
Ram says the truck uses strategic underbody packaging to deliver 13.2 inches of ground clearance, plus standard Mopar rock rails to protect the cab and chassis.
Those numbers are important because diesel engines add weight and packaging complexity.
The fact that Ram retained the lockers, sway bar disconnect, skid plates, rock rails, and 13.2 inches of clearance helps preserve the Power Wagon’s off-road credibility.
The Big Trade-Off: No Factory Winch
There is one major downside: the diesel Power Wagon loses the traditional factory front winch.
This matters because the factory winch has long been one of the Power Wagon’s signature features.
According to Car and Driver, Ram needed room for the Cummins turbo-diesel intercooler, and removing the front-mounted winch helped make the diesel packaging possible.
GearJunkie also reported that Ram did not add the winch or winch bumper on the diesel model, framing it as the key trade-off for finally getting Cummins power in the Power Wagon.
For some buyers, this will be a serious compromise.
A Power Wagon without a factory winch feels less complete as a trail-recovery truck.
For others, the massive jump in torque, towing capacity, payload, diesel range, and gooseneck/fifth-wheel compatibility will be worth the sacrifice.
Wheels, Tires, and Exterior Design
The 2027 Power Wagon Diesel comes in a 4×4 Crew Cab configuration with a 6-foot-4-inch bed. Ram says the truck uses 20-inch Satin Black wheels with machined accents and 34-inch all-terrain tires.
Exterior features include:
| Exterior Feature | Details |
| Hood | Standard sport performance hood |
| Graphics | Power Wagon bedside decals |
| Badging | Satin Black Cummins badging |
| Protection | Wheel arch extensions and trail-ready body protection |
| Storage Option | Available RamBox cargo management system |
| Lighting Option | Extended LED lighting for cab and bed |
| Mirror Option | Heated power convex trailer tow mirrors with power-folding, power-telescoping, and memory |
The Satin Black Cummins badging is a smart detail because it signals that this is not a normal gas Power Wagon. The diesel model should be easy to identify visually without turning it into a completely separate trim.
Interior and Technology
Inside, the diesel Power Wagon gets the same modern Ram Heavy Duty interior direction.
Standard equipment includes a 12-inch Uconnect 5 touchscreen, integrated trailer brake controller, ParkView rear backup camera with dynamic gridlines, and ParkSense front and rear park assist.
Available upgrades include:
| Interior / Tech Feature | Availability |
| 14.5-inch Uconnect 5 touchscreen | Available |
| Front Passenger Interactive Display | Available |
| Trailer tow and off-road pages | Available |
| Alpine 9-speaker audio | Available |
| Harman Kardon 17-speaker audio | Available |
| Heated cloth bench seat | Standard |
| Heated and ventilated leather bucket seats | Available |
| Extended leather touchpoints | Power Wagon Level 2 Equipment Group |
Ram also lists several standard safety and driver-assistance features, including Adaptive Cruise Control, Blind-spot Monitoring with trailer coverage, Pedestrian Detection, and Rear Cross Path Detection.
This is important because the Power Wagon is no longer just a basic trail truck.
With the available larger screen, passenger display, premium audio, leather, and advanced towing tech, it can be configured as a high-end heavy-duty adventure truck.
Towing Technology
The diesel Power Wagon can be equipped with serious towing technology.
The Towing Technology Group includes:
| Feature | Purpose |
| LED third brake light with Cargo-View Camera | Helps monitor bed cargo and hitch area |
| Surround 360-degree camera system | Improves visibility around the truck |
| Trailer Reverse Guidance | Helps guide trailer backing |
| Trailer Tire Pressure Monitoring System | Monitors trailer tire pressure |
The Tow Technology Plus Group adds:
| Feature | Purpose |
| Digital Rearview Mirror 3.0 | Improves rear visibility |
| Trailer Reverse Steering Control | Helps simplify reversing with a trailer |
These features matter because the diesel Power Wagon’s towing capacity is now high enough that buyers may use it with larger campers, equipment trailers, enclosed trailers, and gooseneck setups.
How It Compares to the Gas Power Wagon
The gas Power Wagon is still important because it keeps the traditional Power Wagon formula: gas V8 power, off-road suspension, lockers, and trail gear.
But the diesel Power Wagon changes the equation.
| Category | Gas Power Wagon | Diesel Power Wagon |
| Engine | 6.4L HEMI V8 | 6.7L Cummins HO I6 |
| Horsepower | 405 hp | 430 hp |
| Torque | 429 lb-ft | 1,075 lb-ft |
| Towing | Much lower than diesel model | Nearly 20,000 lbs |
| Payload | Lower than diesel model | Almost 3,000 lbs |
| Factory Winch | Available/associated with gas model history | Not included on diesel model |
| Best For | Trail-first buyers | Towing, range, torque, and off-road use |
The gas model may still be the better choice for buyers who prioritize lower cost, simpler ownership, lighter front-end weight, and the traditional Power Wagon winch setup.
The diesel model is the better fit for buyers who want the Power Wagon look and hardware but need real heavy-duty towing, diesel torque, and longer driving range.
Is the 2027 Ram Power Wagon Diesel a Real Power Wagon?
Yes, but it is a different kind of Power Wagon.
It still has the major Power Wagon ingredients: front and rear electronic lockers, Bilstein shocks, underbody protection, five-link coil rear suspension, Hill Descent Control, rock rails, and an electronic disconnecting front stabilizer bar.
The missing factory winch is the biggest argument against it. For old-school Power Wagon fans, that trade-off will be hard to ignore.
But from a capability standpoint, this is the most versatile Power Wagon Ram has ever built.
It may not be the purest Power Wagon, but it is likely the most useful one for buyers who tow, haul, travel long distances, and still want a heavy-duty truck that can handle serious off-road terrain.
Who Should Buy the 2027 Ram 2500 Power Wagon Diesel?
The diesel Power Wagon makes the most sense for buyers who want:
| Buyer Need | Why This Truck Fits |
| Heavy towing | Nearly 20,000-lb tow rating |
| Diesel torque | 1,075 lb-ft from the Cummins HO |
| Long-distance range | 31-gallon tank and estimated 600-mile range |
| Off-road hardware | Lockers, sway bar disconnect, Bilstein shocks, skid plates |
| Overlanding capability | Range, clearance, rock rails, payload |
| Trailer tech | Available surround cameras, trailer guidance, reverse steering |
| Premium interior options | Available 14.5-inch screen, passenger display, premium audio |
It is not the ideal truck for buyers who want the cheapest Power Wagon, the lightest front end, the simplest powertrain, or a factory winch.
It is also not the best fit for someone who never tows or hauls heavy loads, because much of the diesel’s value comes from torque, range, and load-carrying capability.
Potential Downsides
No truck is perfect, and the diesel Power Wagon has some obvious trade-offs.
1. No Factory Winch
The missing front winch is the biggest downside. For many Power Wagon owners, the winch was part of the identity of the truck. The diesel model trades that recovery feature for the packaging room needed by the Cummins diesel setup.
2. Higher Starting Price
At $88,470 including destination, the diesel Power Wagon will not be cheap.
3. Diesel Ownership Costs
Diesel trucks can bring higher maintenance costs, DEF requirements, emissions system complexity, and more expensive repairs compared with gas trucks. Buyers who do not tow often should think carefully before paying extra for the diesel.
4. Final Ratings Still Need Confirmation
Ram has given “nearly 20,000 pounds” for towing and “almost 3,000 pounds” for payload, but final exact figures may depend on configuration, equipment, and certification.
Final Thoughts: The Power Wagon Fans Asked For
The 2027 Ram 2500 Power Wagon Diesel is a major moment for Ram Heavy Duty buyers.
For years, truck owners wanted a Power Wagon with a Cummins diesel, and Ram finally made it happen.
The result is a truck with 430 horsepower, 1,075 lb-ft of torque, nearly 20,000 pounds of towing capacity, almost 3,000 pounds of payload, a 31-gallon fuel tank, and an estimated 600 miles of range.
It also keeps major Power Wagon off-road hardware like locking differentials, Bilstein shocks, skid plates, rock rails, five-link rear coil suspension, and an electronic disconnecting front stabilizer bar.
The trade-off is clear: you get the Cummins, but you lose the factory winch.
For buyers who want the most traditional Power Wagon experience, the gas model may still be the better choice.
But for buyers who want diesel torque, towing confidence, long-range capability, and serious off-road hardware in one heavy-duty truck, the 2027 Ram 2500 Power Wagon Diesel could be one of the most important Ram HD models in years.
What do you think — is the Cummins diesel worth losing the factory Power Wagon winch? Like, comment, and share your thoughts below.