The RAM 2500/3500 Crew Cab II, specifically the 2025 facelift model equipped with the 6.7-liter Cummins HO (High Output) diesel engine and TorqueFlite 8-speed automatic transmission, represents the latest iteration of Ram’s heavy-duty pickup truck lineage. Introduced for the 2025 model year, this variant builds upon the DT generation launched in 2019, offering increased capability and refinement. Positioned as a mid-to-high range offering within the 2500/3500 lineup, it caters to buyers needing substantial towing and payload capacity without opting for the even more powerful Cummins Super Duty engine. This configuration is primarily aimed at the North American market, where heavy-duty trucks are a significant segment.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Crew Cab II (DT, facelift 2025) |
| Type (Engine) | 2500 6.7 Cummins HO (430 Hp) TorqueFlite |
| Start of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 7.8 kg/Hp, 127.5 Hp/tonne |
| Weight-to-torque ratio | 2.3 kg/Nm, 432.4 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 | 3372 kg (7433.99 lbs.) |
| Max. weight | 4491-4622 kg (9900.96 – 10189.77 lbs.) |
| Max load | 1119-1250 kg (2466.97 – 2755.78 lbs.) |
| Trunk (boot) space – minimum | 1600 l (56.5 cu. ft.) |
| Fuel tank capacity | 117 l (30.91 US gal | 25.74 UK gal) |
| AdBlue tank | 28.4 l (7.5 US gal | 6.25 UK gal) |
| Permitted trailer load with brakes (12%) | 9070 kg (19995.93 lbs.) |
| Length | 6066 mm (238.82 in.) |
| Width | 2120 mm (83.46 in.) |
| Height | 1987 mm (78.23 in.) |
| Wheelbase | 3785 mm (149.02 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1729 mm (68.07 in.) |
| Ride height (ground clearance) | 188 mm (7.4 in.) |
| Minimum turning circle (turning diameter) | 14.6 m (47.9 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 |
Introduction
The 2025 RAM 2500/3500 Crew Cab II with the 6.7L Cummins HO and TorqueFlite transmission represents a sweet spot in the Ram heavy-duty lineup. It offers a significant step up in capability from the gasoline-powered engines while remaining more accessible than the top-tier Cummins Super Duty variant. The “DT” designation refers to the second generation of the modern Ram heavy-duty platform, which debuted in 2019. The 2025 facelift brought updated styling, interior enhancements, and refinements to the powertrain. This truck is designed for owners who frequently tow large trailers – boats, RVs, or construction equipment – and require a robust, reliable workhorse.
Powertrain & Engine Architecture
At the heart of this variant lies the Cummins 6.7-liter inline-six diesel engine. This engine, known for its durability and longevity, utilizes a cast iron block and aluminum cylinder head. The “HO” designation signifies the High Output version, delivering 430 horsepower at 2800 rpm and a massive 1458 Nm (1075 lb-ft) of torque at 1800 rpm. The engine employs a diesel common rail fuel injection system, delivering highly pressurized fuel directly into the cylinders for efficient combustion. A variable geometry turbocharger (VGT) and intercooler work in tandem to boost power and manage exhaust gas temperatures. The overhead valve (OHV) valvetrain, while a more traditional design, contributes to the engine’s robustness and low-end torque characteristics. The TorqueFlite 8-speed automatic transmission is specifically calibrated to handle the engine’s substantial torque output. It features electronically controlled shifts and a heavy-duty torque converter for smooth and reliable operation.
Driving Characteristics
The 6.7L Cummins HO with the TorqueFlite transmission delivers a driving experience focused on effortless towing and hauling. While not as quick off the line as some gasoline-powered trucks, the immense low-end torque provides strong acceleration when loaded. The 8-speed automatic transmission keeps the engine in its optimal power band, even when climbing steep grades or navigating challenging terrain. Gear ratios are optimized for towing, with lower gears providing ample pulling power and higher gears enabling efficient highway cruising. Compared to the standard Cummins engine, the HO version offers a noticeable increase in horsepower, resulting in slightly quicker acceleration when unladen. Compared to the 6.4L Hemi V8, the Cummins offers significantly more torque, making it the preferred choice for heavy-duty applications. The ride quality, while firm due to the heavy-duty suspension, is surprisingly comfortable, especially in the Crew Cab configuration.
Equipment & Trim Levels
The 2500/3500 with the Cummins HO and TorqueFlite transmission is typically available in several trim levels, including Tradesman, Big Horn/Laramie, and Limited. The base Tradesman trim offers essential features such as air conditioning, a basic infotainment system, and vinyl upholstery. Higher trims like the Big Horn/Laramie add features like cloth or leather upholstery, upgraded infotainment systems with larger touchscreens, power-adjustable seats, and chrome exterior accents. The Limited trim represents the pinnacle of luxury, offering premium leather interiors, advanced safety features, and a host of convenience options. Optional extras include a sunroof, premium sound system, navigation system, and various driver-assistance technologies.
Chassis & Braking
The RAM 2500/3500 utilizes a robust body-on-frame construction, providing a solid foundation for heavy-duty applications. The front suspension consists of a coil spring and rigid axle setup with a transverse stabilizer bar. The rear suspension also employs a rigid axle configuration with coil springs and a transverse stabilizer bar. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power even when heavily loaded. The front brakes measure 359.9×39.1 mm, while the rear brakes are 357.9×34 mm. An Anti-lock Braking System (ABS) is standard equipment. Steering is accomplished via a hydraulic power steering system with a cone worm and recirculation balls mechanism.
Market Reception & Comparison
The RAM 2500/3500 with the 6.7L Cummins HO has consistently received positive reviews from automotive critics. It is praised for its powerful engine, smooth transmission, comfortable ride, and impressive towing capacity. Compared to its competitors – Ford Super Duty and Chevrolet/GMC HD trucks – the Ram often stands out for its refined interior and user-friendly technology. Fuel economy, while not a primary concern for heavy-duty truck buyers, is respectable for a vehicle of this size and capability. Reliability has generally been good, with the Cummins engine being known for its longevity. However, some owners have reported issues with the transmission and electrical systems.
Legacy
The 6.7L Cummins engine has established itself as a benchmark for diesel power and durability in the heavy-duty truck segment. The combination of the Cummins HO and the TorqueFlite 8-speed automatic transmission has proven to be a reliable and capable powertrain. In the used car market, these trucks hold their value well, particularly those that have been well-maintained. The 2025 facelift model is expected to further enhance the Ram’s reputation for quality and capability, solidifying its position as a leading contender in the heavy-duty truck market. The continued demand for these trucks speaks to the enduring appeal of the Cummins engine and the overall quality of the Ram 2500/3500 platform.
