The RAM 2500/3500 Mega Cab II (DT, facelift 2025) represents the latest iteration of Ram’s heavy-duty pickup truck line, continuing a legacy of robust performance and capability. Introduced in 2025, this facelift builds upon the established DT platform, offering updated styling, enhanced technology, and a range of powerful engine options. The 2500 6.7 Cummins HO (430 Hp) 4×4 TorqueFlite variant specifically caters to buyers seeking a balance of substantial towing capacity, everyday usability, and the renowned durability of the Cummins diesel engine. This configuration positions itself as a workhorse capable of handling demanding tasks while providing a relatively refined driving experience compared to lower or higher output trims.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Mega 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 | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 8.5 kg/Hp, 117 Hp/tonne |
| Weight-to-torque ratio | 2.5 kg/Nm, 396.6 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 | 2 |
| 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 | 3676-3691 kg (8104.19 – 8137.26 lbs.) |
| Max. weight | 4491-4622 kg (9900.96 – 10189.77 lbs.) |
| Max load | 815-931 kg (1796.77 – 2052.5 lbs.) |
| Trunk (boot) space – minimum | 1600 l (56.5 cu. ft.) |
| Fuel tank capacity | 117 l (30.91 US gal | 25.74 UK gal) |
| Permitted trailer load with brakes (12%) | 7112 kg (15679.28 lbs.) |
| Length | 6348 mm (249.92 in.) |
| Width | 2120 mm (83.46 in.) |
| Height | 2036 mm (80.16 in.) |
| Wheelbase | 4074 mm (160.39 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) | 15.6 m (51.18 ft.) |
| Approach angle | 23.3° |
| Departure angle | 25.7° |
| Ramp-over (brakeover) angle | 23.2° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission TorqueFlite |
| Front suspension | Coil spring, Rigid axle suspension, Transverse stabilizer |
| Rear suspension | Rigid axle suspension, Transverse stabilizer, Coil spring |
| Front brakes | Ventilated discs, 359.9×39.1 mm |
| Rear brakes | Ventilated discs, 357.9×34 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Cone worm with recirculation balls |
| Power steering | Hydraulic Steering |
| Tires size | 275/70 R18; 285/60 R20 |
| Wheel rims size | 8J x 18; 8J x 20 |
INTRODUCTION
The 2025 RAM 2500/3500 Mega Cab II, specifically equipped with the 6.7-liter Cummins HO diesel engine and a TorqueFlite 8-speed automatic transmission, represents a significant offering in the heavy-duty truck segment. This variant builds upon the DT platform introduced in 2019, receiving a facelift for the 2025 model year that includes revised styling, upgraded interior features, and enhanced technology. The “HO” designation signifies a higher output version of the Cummins engine, delivering 430 horsepower and a massive 1458 Nm (1075 lb-ft) of torque. Paired with the 4×4 drivetrain, this configuration is designed for demanding tasks such as heavy towing, hauling, and off-road capability. Within the RAM 2500/3500 lineup, this trim level sits comfortably in the mid-range, offering a compelling blend of power, refinement, and value.
Powertrain & Engine Architecture
At the heart of this RAM 2500/3500 variant lies the Cummins 6.7L inline-six diesel engine. This engine, known for its durability and longevity, utilizes a cast iron block and head, contributing to its robust construction. The “HO” (High Output) version features a variable geometry turbocharger (VGT) and a high-pressure common rail fuel injection system. The common rail system allows for precise fuel delivery, optimizing combustion efficiency and reducing emissions. The engine employs an overhead valve (OHV) valvetrain, a design choice favored for its simplicity and reliability. The TorqueFlite 8-speed automatic transmission is specifically calibrated to handle the engine’s substantial torque output. This transmission features electronically controlled shifts and a wide gear ratio spread, optimizing both fuel economy and towing performance. The transmission is designed to provide smooth and responsive shifting, even under heavy loads.
Driving Characteristics
The 430 hp and 1458 Nm of torque delivered by the Cummins HO engine translate into impressive real-world performance. While not as overtly powerful as the higher-output Cummins variants, this configuration provides ample power for most towing and hauling scenarios. The TorqueFlite 8-speed automatic transmission plays a crucial role in maximizing the engine’s potential. The close gear ratios allow the engine to stay within its optimal power band, providing strong acceleration and effortless cruising. Compared to manual transmission equipped models, the automatic offers greater convenience, particularly in stop-and-go traffic or when navigating challenging terrain. The 4×4 system provides enhanced traction in slippery conditions, making this truck capable both on and off-road. The ride quality, while firm due to the heavy-duty suspension, is surprisingly comfortable, especially when the truck is loaded.
Equipment & Trim Levels
The RAM 2500/3500 6.7 Cummins HO 4×4 TorqueFlite typically comes standard with a comprehensive suite of features. These include air conditioning, power windows and locks, a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, and a rearview camera. Higher trim levels, such as the Laramie or Limited, add premium features like leather upholstery, heated and ventilated seats, a premium sound system, and advanced safety technologies such as adaptive cruise control and lane departure warning. Optional extras often include a sunroof, a navigation system, and a bed liner. Interior upholstery typically consists of durable cloth or vinyl in lower trims, with leather becoming standard on higher-end models. The dashboard layout is functional and well-designed, with intuitive controls and a clear instrument cluster.
Chassis & Braking
The RAM 2500/3500 utilizes a robust chassis designed to withstand the stresses of heavy-duty use. The front suspension features coil springs and a rigid axle with a transverse stabilizer bar, providing a comfortable ride and stable handling. The rear suspension also employs coil springs and a rigid axle with a transverse stabilizer bar. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power even when towing heavy loads. An Anti-lock Braking System (ABS) is standard, enhancing safety and control. The steering system utilizes a hydraulic power steering system, providing responsive and precise steering feel. The truck’s high ground clearance and robust suspension allow it to navigate challenging terrain with ease.
Market Reception & Comparison
The RAM 2500/3500 with the 6.7 Cummins HO engine has consistently received positive reviews from critics and owners alike. It is praised for its powerful engine, smooth transmission, comfortable ride, and spacious interior. Compared to the standard output Cummins engine, the HO version offers a noticeable increase in power and torque, making it a better choice for those who frequently tow or haul heavy loads. Compared to gasoline-powered RAM 2500/3500 models, the Cummins diesel offers superior fuel economy and longevity. However, the diesel engine does come with a higher initial cost and potentially higher maintenance expenses. Against competitors like the Ford Super Duty and Chevrolet Silverado/GMC Sierra, the RAM 2500/3500 is often lauded for its refined interior and comfortable ride.
Legacy
The Cummins 6.7L engine has earned a reputation for exceptional reliability and longevity. With proper maintenance, these engines can easily exceed 320,000 kilometers (200,000 miles) without major issues. The TorqueFlite 8-speed automatic transmission is also known for its durability. In the used car market, RAM 2500/3500 models equipped with the Cummins HO engine command a premium price due to their proven track record and strong resale value. These trucks remain highly sought after by those who need a capable and reliable workhorse. The 2025 facelift is expected to further enhance the truck’s appeal and maintain its position as a leader in the heavy-duty truck segment.
