The RAM 2500/3500 Regular Cab I, specifically the 3500 model equipped with the 6.7 HO Cummins turbocharged diesel engine producing 350 horsepower, represents a significant offering in the heavy-duty pickup truck segment. Introduced for the 2012 model year, this configuration was part of the fourth generation of Dodge/RAM heavy-duty trucks (2009-2018), known internally as the D/W series. This particular variant, often configured as a 4×4 Dual Rear Wheel (DRW) model, was aimed at buyers requiring substantial towing and payload capacity for commercial or demanding personal use. It occupied a position between the standard 2500 models and the higher-output Cummins variants, offering a balance of power, efficiency, and cost.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Regular Cab I |
| Type (Engine) | 3500 6.7 HO Cummins TD (350 Hp) 4×4 DRW |
| Start of production | 2012 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 2-3 |
| Doors | 2 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 9.3 kg/Hp, 107.9 Hp/tonne |
| Weight-to-torque ratio | 3.7 kg/Nm, 271.7 Nm/tonne |
| Power | 350 Hp @ 3000 rpm |
| Power per litre | 52.3 Hp/l |
| Torque | 881 Nm @ 1500 rpm (649.79 lb.-ft. @ 1500 rpm) |
| Maximum engine speed | 3500 rpm |
| Engine Model/Code | ETJ |
| 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 | 17.3:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | OHV |
| Engine oil capacity | 11.4 l (12.05 US qt | 10.03 UK qt) |
| Coolant | 21.4 l (22.61 US qt | 18.83 UK qt) |
| Kerb Weight | 3243 kg (7149.59 lbs.) |
| Max. weight | 5534 kg (12200.38 lbs.) |
| Max load | 2291 kg (5050.79 lbs.) |
| Trunk (boot) space – maximum | 2115 l (74.69 cu. ft.) |
| Fuel tank capacity | 132 l (34.87 US gal | 29.04 UK gal) |
| Permitted trailer load with brakes (12%) | 6214 kg (13699.52 lbs.) |
| Length | 5867 mm (230.98 in.) |
| Width including mirrors | 2004 mm (78.9 in.) |
| Height | 1923 mm (75.71 in.) |
| Wheelbase | 3556 mm (140 in.) |
| Front track | 1735 mm (68.31 in.) |
| Rear (Back) track | 1925 mm (75.79 in.) |
| Minimum turning circle (turning diameter) | 12.6 m (41.34 ft.) |
| Approach angle | 18.1° |
| Departure angle | 27.6° |
| Ramp-over (brakeover) angle | 16.9° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| 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 | 245/70 R17; 265/70 R17; 275/70 R18 |
| Wheel rims size | 7.5J x 17; 8J x 17; 8J x 18 |
Powertrain & Engine Architecture
The heart of this RAM 3500 is the 6.7-liter Cummins inline-six diesel engine, designated the ETJ code. This engine represents a significant evolution of the Cummins B-series, known for its durability and longevity. The “HO” (High Output) designation indicates a higher horsepower rating achieved through revised turbocharger tuning and fuel injection calibration. The engine utilizes a Bosch common rail fuel injection system, delivering highly pressurized fuel directly into the cylinders for optimized combustion. The valvetrain employs an overhead valve (OHV) configuration, a design choice favored for its simplicity and reliability. The turbocharger, coupled with an intercooler, forces more air into the engine, boosting power and torque. The 6-speed manual transmission was the standard offering, providing drivers with full control over gear selection.
Driving Characteristics
The 350-horsepower and 881 lb-ft of torque delivered by the 6.7L Cummins in this configuration provided substantial pulling power, making it well-suited for heavy towing and hauling. While not as quick accelerating as higher-output Cummins variants, the 350hp engine offered a broader, more usable powerband. The manual transmission allowed for precise control, especially when navigating challenging terrain or managing heavy loads. The DRW configuration, with its wider stance, enhanced stability when towing. However, the increased weight and larger footprint did impact maneuverability in tight spaces. Compared to the standard 2500 models with the 5.7L Hemi V8, the Cummins diesel offered significantly more torque and towing capacity, albeit with a higher initial cost and potentially higher maintenance expenses.
Equipment & Trim Levels
The RAM 2500/3500 Regular Cab I 3500 6.7 HO Cummins TD (350 Hp) 4×4 DRW typically came standard with features geared towards work and utility. These included a heavy-duty suspension, locking rear differential, and a robust frame. Interior appointments were functional rather than luxurious, with durable vinyl or cloth upholstery. Standard features often included air conditioning, an AM/FM radio, and basic instrumentation. Optional extras could include power windows and locks, a premium sound system, and upgraded interior trim. The Regular Cab configuration offered a basic, no-frills interior focused on maximizing space for work-related equipment.
Chassis & Braking
The chassis of the RAM 3500 was built around a heavy-duty frame designed to withstand significant loads. The front suspension utilized an independent multi-link setup for improved ride quality and handling, while the rear suspension employed leaf springs, a traditional design favored for its load-carrying capacity. Braking duties were handled by disc brakes on all four wheels, providing ample stopping power even when heavily loaded. An Anti-lock Braking System (ABS) was standard, enhancing safety and control. The DRW configuration featured a wider track width, contributing to increased stability.
Market Reception & Comparison
The 2012 RAM 3500 with the 6.7 HO Cummins engine received generally positive reviews. Critics praised its robust construction, impressive towing capacity, and the legendary durability of the Cummins engine. Fuel economy, while not a primary concern for buyers in this segment, was considered reasonable for a heavy-duty diesel truck. Compared to competing offerings from Ford and General Motors, the RAM 3500 was often lauded for its comfortable ride and well-designed interior. However, some reviewers noted that the manual transmission could be fatiguing during extended driving, and the price was higher than some competitors.
Legacy
The 6.7L Cummins engine, in all its variants, has earned a reputation for exceptional reliability and longevity. Properly maintained, these engines can easily exceed 300,000 miles. The 2012 RAM 3500 with the 350hp Cummins remains a popular choice in the used truck market, particularly among buyers seeking a capable and dependable work truck. While newer models offer more advanced technology and features, the simplicity and proven durability of this generation continue to appeal to many. Parts availability is generally good, and a large network of qualified mechanics can service these trucks. The DRW configuration, while less common than single-rear-wheel models, commands a premium due to its enhanced towing and hauling capabilities.
