The RAM 2500/3500 Regular Cab II (DT) series, specifically the 3500 model equipped with the 6.7-liter Cummins turbocharged diesel engine producing 400 horsepower and paired with a six-speed Aisin automatic transmission and a dual rear wheel (DRW) configuration, represents a significant offering in the heavy-duty pickup truck segment. Introduced for the 2019 model year and continuing through 2025, this variant caters to buyers requiring substantial towing and payload capacity. It occupies a position within the RAM lineup geared towards commercial users, farmers, and individuals with demanding hauling needs, sitting above the lighter-duty 1500 and below the more specialized chassis-cab offerings.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Regular Cab II (DT) |
| Type (Engine) | 3500 6.7 Cummins TD (400 Hp) 4×4 Automatic DRW |
| Start of production | 2019 |
| End of production | 2025 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2-3 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 8.9 kg/Hp, 112.5 Hp/tonne |
| Weight-to-torque ratio | 3.3 kg/Nm, 304.8 Nm/tonne |
| Power | 400 Hp @ 2800 rpm |
| Power per litre | 59.8 Hp/l |
| Torque | 1084 Nm @ 1800 rpm (799.52 lb.-ft. @ 1800 rpm) |
| Maximum engine speed | 3200 rpm |
| Engine layout | Front, Longitudinal |
| 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 |
| Engine oil capacity | 11.4 l (12.05 US qt | 10.03 UK qt) |
| Coolant capacity | 20.8 l (21.98 US qt | 18.3 UK qt) |
| Kerb Weight | 3557 kg (7841.84 lbs.) |
| Max. weight | 6350 kg (13999.35 lbs.) |
| Max load | 2793 kg (6157.51 lbs.) |
| Trunk (boot) space – maximum | 2115 l (74.69 cu. ft.) |
| Permitted trailer load with brakes (12%) | 15100 kg (33289.8 lbs.) |
| Length | 5892 mm (231.97 in.) |
| Width including mirrors | 2450 mm (96.46 in.) |
| Height | 2019 mm (79.49 in.) |
| Wheelbase | 3560 mm (140.16 in.) |
| Front track | 1769 mm (69.65 in.) |
| Rear (Back) track | 1927 mm (75.87 in.) |
| Ride height (ground clearance) | 314 mm (12.36 in.) |
| Minimum turning circle (turning diameter) | 13.9 m (45.6 ft.) |
| Approach angle | 20.6° |
| Departure angle | 24.4° |
| Ramp-over (brakeover) angle | 23.2° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission Aisin |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Leaf spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 275/70 R18 E; 285/60 R20E |
| Wheel rims size | 8.0J x 18; 8J x 20 |
INTRODUCTION
The RAM 2500/3500 Regular Cab II (DT) series, launched in 2019, represented a comprehensive redesign of the heavy-duty RAM lineup. This generation, designated DT, brought significant improvements in capability, refinement, and technology. The 3500 DRW configuration with the 6.7-liter Cummins diesel and Aisin automatic transmission is specifically engineered for owners who regularly tow substantial loads. The “Regular Cab” designation indicates a two-door body style, prioritizing functionality over passenger space, and the DRW (Dual Rear Wheel) setup further enhances stability and payload capacity. This particular variant was produced through the 2025 model year, solidifying its place as a workhorse in the American truck market.
Powertrain & Engine Architecture
At the heart of this RAM 3500 DRW lies the 6.7-liter Cummins inline-six diesel engine. This engine, known internally by various codes depending on the specific year and emissions configuration, is a robust and highly regarded powerplant. The 400 horsepower and 1084 lb-ft of torque are achieved through a sophisticated turbocharging system, an intercooler, 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 features four valves per cylinder, enhancing breathing and contributing to its power output. The Aisin six-speed automatic transmission is a crucial component, specifically chosen for its durability and ability to handle the engine’s substantial torque. This transmission features electronically controlled shifts and a tow/haul mode, optimizing gear selection for heavy loads. The longitudinal engine layout contributes to a balanced weight distribution, improving handling and stability.
Driving Characteristics
The 400 hp/1084 lb-ft combination delivers impressive performance, even when heavily loaded. While not designed for outright speed, the truck provides ample power for merging onto highways and maintaining speed on inclines while towing. The Aisin transmission’s gear ratios are well-suited for towing, keeping the engine within its optimal power band. Compared to the gasoline-powered RAM 2500/3500 models, the Cummins diesel offers significantly more low-end torque, making it far more capable for demanding tasks. Compared to higher-output Cummins variants (like those exceeding 420 hp), this 400 hp version prioritizes fuel efficiency and longevity over peak power. The DRW configuration provides enhanced stability, particularly when towing, reducing sway and improving overall control. However, the wider track also makes maneuvering in tight spaces more challenging.
Equipment & Trim Levels
The RAM 2500/3500 Regular Cab II (DT) offered various trim levels, with the 3500 DRW 6.7 Cummins typically available in Tradesman, SLT, Laramie, and Limited trims. Even the base Tradesman trim included essential features like air conditioning, a basic infotainment system, and vinyl upholstery. Higher trims added features such as leather upholstery, heated and ventilated seats, a larger touchscreen display, premium audio systems, and advanced safety technologies. Optional extras included a fifth-wheel hitch preparation package, a bed liner, and various appearance packages. The interior design focused on functionality and durability, with easy-to-clean surfaces and ample storage space.
Chassis & Braking
The chassis of the RAM 3500 DRW is built around a heavy-duty frame designed to withstand significant stress. The front suspension utilizes an independent multi-link setup, providing a comfortable ride and improved handling. The rear suspension employs a traditional leaf spring design, optimized for load-carrying capacity. The braking system features disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) is standard, enhancing safety during emergency braking situations. The DRW configuration necessitates a wider track, contributing to increased stability but also requiring larger tires and wheels. Tire sizes typically ranged from 275/70R18 to 285/60R20, depending on the trim level and wheel options.
Market Reception & Comparison
The RAM 2500/3500 series, including the 3500 DRW 6.7 Cummins variant, consistently received positive reviews from automotive critics. The Cummins engine was praised for its reliability, durability, and impressive torque output. The Aisin transmission was also lauded for its smooth shifting and ability to handle heavy loads. Compared to competing heavy-duty trucks from Ford and General Motors, the RAM 3500 was often noted for its comfortable ride quality and well-appointed interior. Fuel economy, while not a primary concern for heavy-duty truck buyers, was generally competitive within the segment. Reliability has been generally strong, although diesel engines can require more expensive maintenance than gasoline engines.
Legacy
The 6.7-liter Cummins diesel engine has established a strong reputation for longevity and reliability. Properly maintained, these engines can easily exceed 200,000 miles. The Aisin transmission is also known for its durability. On the used car market, the RAM 3500 DRW 6.7 Cummins commands a premium price due to its capabilities and reputation. These trucks remain highly sought after by individuals and businesses requiring a robust and dependable workhorse. The DT generation RAM 3500 DRW continues to be a popular choice for those needing serious towing and hauling capacity, solidifying its place as a significant vehicle in the American truck landscape.
