Why Ram Never Built a Diesel Power Wagon—Until Now

For as long as I can remember covering Ram Trucks, one question kept popping up from enthusiasts: when are we getting a diesel Power Wagon? It’s one of those ideas that just makes sense—pair the legendary off-road capability of the Power Wagon with the brute torque of the 6.7-liter Cummins turbodiesel I6 High-Output (H/O) engine.

But like most things in the automotive world, it wasn’t that simple.

Back in December 2025, I had the chance to hear directly from Ram CEO Tim Kuniskis about why this combination took so long—and why it finally made sense to bring it to market now.

Kuniskis didn’t sugarcoat it.

“Yeah, it’s actually something that we’ve talked about for a long, long time, and it was just never super high on the list. And so when I was making the crazy list of 25 things that we’re going to do in 18 months, I added it to the list, you know, my job is to make shit up, and their job is to figure it out, and they figured it out. So that’s why this is the right time.”

That statement alone tells you everything—you’re looking at something that wasn’t originally prioritized, but once it got attention, it moved fast.

The Winch Problem That Held Everything Back

For years, the biggest hurdle wasn’t engineering the diesel—it was packaging everything around it.

“The thing that was always the impediment to it was the winch. Some people say, you know, the winch is going to block air flow from the charger and cooler,” he said.

That’s a major issue when you’re dealing with a turbocharged diesel that depends on proper airflow to maintain performance and durability.

He continued to explain how the concerns piled up:

“People say the winch is going to add too much weight in conjunction with the diesel engine. That’s okay, fine. Screw it. Get rid of the winch. We’ll figure it out later. So, it’s going to be available now without a winch. All the other capabilities there. Well, we’ll see what’s right. I don’t know if simulations are an indication of real-world data. We’ll find out.”

And just like that, the solution became clear—remove the bottleneck and move forward.

A Different Kind of Power Wagon

The 2027 Ram 2500 Power Wagon with Cummins H/O doesn’t walk away from what made the truck famous. It builds on it.

You still get the core off-road hardware: solid front and rear axles, front and rear electronic locking differentials, and serious underbody protection. Skid plates protect critical components like the transfer case, fuel tank, and DEF system, ensuring this truck is ready for real-world abuse—not just showroom appeal.

The axle setup remains heavy-duty, with 9.25-inch front and 11.5-inch rear axles, both sourced from American Axle Manufacturing (AAM). Upgraded 38-mm rear shafts deliver power directly to the 34-inch all-terrain tires, giving the truck the traction it needs when things get rough.

Visually, it sticks to a purposeful formula—20-inch Satin Black wheels with machined accents and an aggressive stance that looks ready to go anywhere.

Suspension Still Leads the Segment

One area where the Power Wagon continues to stand out is suspension—and the diesel model doesn’t change that.

Up front, a three-link coil suspension paired with Bilstein monotube shocks delivers both strength and articulation. The class-exclusive electronic disconnecting sway bar allows the front axle to move more freely over obstacles, improving off-road capability when it matters most.

Out back, the five-link coil suspension setup replaces traditional leaf springs, offering better ride quality without sacrificing capability. A Bilstein dampener adds extra control, especially when the truck is loaded or navigating uneven terrain.

Diesel Torque Changes the Game

The addition of the Cummins H/O turbodiesel completely changes how the Power Wagon delivers its performance.

Paired with a 3.42 axle ratio and the TorqueFlite HD 8AP1075 8-speed automatic transmission, the setup is optimized for both low-end grunt and highway efficiency. Lower gears provide strong pulling power for towing and off-road crawling, while higher gears keep engine speeds down on long drives.

And speaking of long drives, the 31-gallon fuel tank delivers an estimated range of around 600 miles. That’s a big deal for overlanders or anyone heading deep into remote areas.

Capability numbers back it all up. The diesel Power Wagon can tow nearly 20,000 pounds and handle close to 3,000 pounds of payload—figures that firmly place it in serious work-truck territory while still maintaining its off-road identity.

Smarter Towing and Expanded Capability

Ram also made sure the technology matches the capability.

The available Towing Technology Group includes features such as a 360-degree camera system, trailer reverse guidance, and a cargo-view camera. Step up to the Tow Technology Plus Group, and you get a digital rearview mirror and trailer reverse steering control.

For the first time ever, the Power Wagon can be equipped with fifth-wheel and gooseneck prep, opening it up to a whole new level of towing flexibility.

Finally, the Moment Arrived

This isn’t just another trim level—it’s something enthusiasts have been asking for decades.

What’s interesting is that the solution wasn’t about adding more—it was about removing a barrier. By rethinking the role of the winch and prioritizing the diesel powertrain, Ram finally delivered a truck that blends two worlds: hardcore off-road capability and Cummins-powered performance.

The Cummins-powered Power Wagon will arrive this summer. And as Kuniskis made clear, sometimes the craziest ideas are the ones worth chasing.