The RAM 2500/3500 Regular Cab II (DT facelift, introduced for the 2025 model year) represents the latest iteration of Ram’s heavy-duty pickup truck lineup. This specific variant features the 6.7-liter Cummins High Output (HO) diesel engine producing 430 horsepower, paired with a TorqueFlite 8-speed automatic transmission and a four-wheel drive (4×4) system. Positioned as a workhorse within the Ram Heavy Duty range, this configuration caters to buyers needing substantial towing and hauling capacity without sacrificing everyday drivability. The DT facelift brought updated styling, interior refinements, and enhanced technology compared to the previous generation, solidifying the Ram’s reputation for a comfortable and capable heavy-duty experience.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Regular Cab II (DT, facelift 2025) |
| Type (Engine) | 2500 6.7 Cummins HO (430 Hp) 4×4 TorqueFlite |
| Start of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2-3 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 7.9 kg/Hp, 127.3 Hp/tonne |
| Weight-to-torque ratio | 2.3 kg/Nm, 431.7 Nm/tonne |
| Power | 430 Hp @ 2800 rpm |
| Power per litre | 64.3 Hp/l |
| Torque | 1458 Nm @ 1800 rpm (1075.37 lb.-ft. @ 1800 rpm) |
| Maximum engine speed | 3200 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Cummins |
| Engine displacement | 6690 cm3 (408.25 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 107 mm (4.21 in.) |
| Piston Stroke | 124 mm (4.88 in.) |
| Compression ratio | 16.2:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | OHV |
| Engine oil capacity | 11.3 l (11.94 US qt | 9.94 UK qt) |
| Coolant | 22.5 l (23.78 US qt | 19.8 UK qt) |
| Kerb Weight | 3377-3378 kg (7445.01 – 7447.22 lbs.) |
| Max. weight | 4491-4622 kg (9900.96 – 10189.77 lbs.) |
| Max load | 1114-1244 kg (2455.95 – 2742.55 lbs.) |
| Trunk (boot) space – minimum | 2100 l (74.16 cu. ft.) |
| Fuel tank capacity | 106 l (28 US gal | 23.32 UK gal) |
| AdBlue tank | 28.4 l (7.5 US gal | 6.25 UK gal) |
| Permitted trailer load with brakes (12%) | 9026 kg (19898.92 lbs.) |
| Length | 5892 mm (231.97 in.) |
| Width | 2120 mm (83.46 in.) |
| Height | 2037 mm (80.2 in.) |
| Wheelbase | 3560 mm (140.16 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1729 mm (68.07 in.) |
| Ride height (ground clearance) | 217 mm (8.54 in.) |
| Minimum turning circle (turning diameter) | 13.9 m (45.6 ft.) |
| Front brakes | Ventilated discs, 359.9×39.1 mm |
| Rear brakes | Ventilated discs, 357.9×34 mm |
| Number of gears and type of gearbox | 8 gears, automatic transmission TorqueFlite |
Powertrain & Engine Architecture
The heart of this RAM 2500/3500 variant is the Cummins 6.7-liter inline-six diesel engine. This engine, designated as the “High Output” (HO) version, delivers 430 horsepower and a massive 1458 Nm (1075 lb-ft) of torque. The engine utilizes a common-rail direct fuel injection system, optimized for efficient combustion and reduced emissions. The overhead valve (OHV) configuration, while seemingly dated, contributes to the engine’s durability and low-end torque characteristics. A turbocharger with an intercooler further enhances performance by increasing air density entering the cylinders. The engine’s robust construction and relatively simple design contribute to its longevity and ease of maintenance. The TorqueFlite 8-speed automatic transmission is specifically calibrated to handle the engine’s substantial torque output, providing smooth and efficient gear changes. This transmission replaced the older 6-speed unit, offering improved fuel economy and enhanced towing performance.
Driving Characteristics
The 6.7L Cummins HO with the TorqueFlite 8-speed automatic delivers a driving experience focused on capability and confidence. While not as quick as gasoline-powered alternatives, the immense torque allows for effortless towing and hauling, even with heavy loads. The automatic transmission is well-tuned, providing smooth shifts and keeping the engine within its optimal power band. Compared to lower-output Cummins variants, the HO version offers a noticeable increase in acceleration and responsiveness. The 4×4 system provides excellent traction in various conditions, making it suitable for both on-road and off-road use. The gear ratios are optimized for towing, with lower gears providing ample pulling power and higher gears allowing for comfortable highway cruising. The ride quality, while firm due to the heavy-duty suspension, is surprisingly comfortable, especially considering the truck’s intended purpose.
Equipment & Trim Levels
The 2025 RAM 2500/3500 Regular Cab with the Cummins HO engine was typically offered in various trim levels, including Tradesman, Big Horn/Laramie, and Limited. The base Tradesman trim provided essential features like air conditioning, a basic infotainment system, and vinyl upholstery. Higher trims, such as the Laramie and Limited, added luxury features like leather upholstery, heated and ventilated seats, a premium sound system, and advanced safety technologies. Standard equipment included a rearview camera, keyless entry, and a locking tailgate. Optional extras included a navigation system, a sunroof, and various driver-assistance features like adaptive cruise control and lane departure warning.
Chassis & Braking
The RAM 2500/3500 utilizes a robust body-on-frame construction, providing a solid foundation for heavy-duty applications. The front suspension features coil springs and a rigid axle with a transverse stabilizer bar, while the rear suspension employs a similar configuration. The braking system consists of ventilated discs on all four wheels, providing ample stopping power even when towing heavy loads. ABS (Anti-lock Braking System) is standard. The rear axle ratios vary depending on the specific configuration and intended use, with options available for optimized towing or fuel economy. Steering is handled by a hydraulic power steering system, providing a responsive and predictable feel.
Market Reception & Comparison
The 2025 RAM 2500/3500 with the 6.7L Cummins HO engine received positive reviews for its powerful engine, comfortable ride, and refined interior. Critics praised the TorqueFlite 8-speed automatic transmission for its smooth operation and improved fuel economy compared to previous generations. Compared to the standard output Cummins engine, the HO version offered a significant performance boost, making it ideal for buyers who frequently tow heavy trailers. Compared to competitors like the Ford Super Duty and Chevrolet Silverado HD, the Ram was often lauded for its more comfortable ride and upscale interior. Fuel economy, while not a primary concern for heavy-duty truck buyers, was generally considered competitive within its class.
Legacy
The Cummins 6.7-liter engine has a long-standing reputation for reliability and durability, and the HO version continues this tradition. These engines, when properly maintained, are known to exceed 320,000 kilometers (200,000 miles) with relative ease. On the used car market, RAM 2500/3500 models equipped with this powertrain hold their value well, due to their proven capability and longevity. The TorqueFlite 8-speed automatic transmission has also proven to be a reliable unit, further enhancing the long-term appeal of these trucks. Regular maintenance, including oil changes and filter replacements, is crucial for ensuring the continued performance and reliability of this powertrain.
