The RAM 2500/3500 Mega Cab I, specifically the facelifted version produced from 2013 to 2018, represented a significant evolution in the heavy-duty pickup truck segment. This generation, internally designated as the fourth generation of the RAM heavy-duty line, built upon the foundation laid by its predecessors, offering increased capability, refinement, and technology. The 2500 model, equipped with the 6.7-liter Cummins turbocharged diesel engine producing 370 horsepower and paired with a six-speed automatic transmission, and a 4×4 drivetrain, occupied a sweet spot in the lineup, balancing robust performance with everyday usability. This configuration was particularly popular among those needing substantial towing and hauling capacity without the extreme duty-cycle demands of the 3500 series.
Technical Specifications
| Brand | RAM |
| Model | 2500/3500 |
| Generation | 2500/3500 Mega Cab I (facelift 2013) |
| Type (Engine) | 2500 6.7 Cummins TD (370 Hp) 4×4 Automatic |
| Start of production | 2013 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 5-6 |
| Doors | 4 |
| Fuel Type | Diesel |
| Weight-to-power ratio | 9.9 kg/Hp, 101.5 Hp/tonne |
| Weight-to-torque ratio | 3.4 kg/Nm, 297.2 Nm/tonne |
| Power | 370 Hp @ 2800 rpm |
| Power per litre | 55.3 Hp/l |
| Torque | 1084 Nm @ 1600 rpm (799.52 lb.-ft. @ 1600 rpm) |
| Maximum engine speed | 3200 rpm |
| Engine layout | Front, Longitudinal |
| 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 | 16.2:1 |
| Number of valves per cylinder | 2 |
| 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 | 3647 kg (8040.26 lbs.) |
| Max. weight | 4536 kg (10000.17 lbs.) |
| Max load | 889 kg (1959.91 lbs.) |
| Trunk (boot) space – maximum | 1628 l (57.49 cu. ft.) |
| Fuel tank capacity | 117 l (30.91 US gal | 25.74 UK gal) |
| Permitted trailer load with brakes (12%) | 7616 kg (16790.41 lbs.) |
| Length | 6309 mm (248.39 in.) |
| Width including mirrors | 2009 mm (79.09 in.) |
| Height | 1989 mm (78.31 in.) |
| Wheelbase | 4064 mm (160 in.) |
| Front track | 1735 mm (68.31 in.) |
| Rear (Back) track | 1732 mm (68.19 in.) |
| Minimum turning circle (turning diameter) | 14.2 m (46.59 ft.) |
| Approach angle | 23.9° |
| Departure angle | 23.0° |
| Ramp-over (brakeover) angle | 18.3° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Tires size | 275/70 R18 118T; 285/60 R20 115T |
| Wheel rims size | 8J x 18 ET43; 8J x 20 ET55 |
Powertrain & Engine Architecture
The heart of this RAM 2500/3500 variant is the 6.7-liter Cummins inline-six diesel engine, designated as the ETJ code. This engine represents a significant departure from earlier Cummins designs, incorporating advanced technologies to meet stricter emissions standards while maintaining its reputation for durability and torque. The engine utilizes a high-pressure common rail fuel injection system, delivering fuel directly into the cylinders at extremely high pressures for optimized combustion. The turbocharger, coupled with an intercooler, forces more air into the engine, boosting power output. The overhead valve (OHV) configuration, while seemingly traditional, proved robust and reliable in this application. The six-speed automatic transmission, sourced from Aisin, was specifically designed to handle the immense torque produced by the Cummins engine. It featured electronically controlled shifting and a tow/haul mode for improved performance when towing heavy loads.
Driving Characteristics
The 370 horsepower and 1084 lb-ft of torque delivered by this powertrain combination resulted in a driving experience characterized by immense pulling power. While not as quick accelerating as gasoline-powered trucks, the Cummins diesel provided effortless towing and hauling capabilities. The automatic transmission, while smooth, was tuned for durability and efficiency rather than outright performance. Gear ratios were optimized for low-end torque, making it ideal for climbing steep grades or navigating challenging terrain with a heavy load. Compared to the higher-output Cummins variants (like the 420 hp version), this 370 hp version offered a more relaxed driving experience, with less engine noise and vibration. It also provided better fuel economy, making it a more practical choice for daily driving.
Equipment & Trim Levels
The 2500 with the 6.7L Cummins and automatic transmission was available in a variety of trim levels, including SLT, Laramie, and Limited. The SLT trim served as the entry point, offering standard features like air conditioning, power windows and locks, and a basic audio system. The Laramie trim added leather upholstery, heated front seats, and a more sophisticated infotainment system. The Limited trim represented the pinnacle of luxury, with premium leather, wood trim, and advanced features like a navigation system and a premium sound system. Optional extras included a sunroof, upgraded wheels, and various towing packages.
Chassis & Braking
The RAM 2500/3500 featured a robust chassis designed to withstand the stresses of heavy-duty use. The front suspension utilized an independent multi-link design for improved ride quality and handling. The rear suspension also employed a multi-link setup, providing a comfortable ride even when the truck was loaded. Braking duties were handled by disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) was standard, enhancing safety and control. The heavy-duty nature of the truck meant that rear drum brakes were not standard, as the disc brakes were necessary to handle the increased weight and stopping demands.
Market Reception & Comparison
The 2500/3500 with the 6.7L Cummins and automatic transmission was well-received by critics and consumers alike. It was praised for its powerful engine, comfortable ride, and refined interior. Compared to its competitors, such as the Ford Super Duty and Chevrolet Silverado/GMC Sierra, the RAM offered a unique combination of capability and luxury. Fuel economy was generally considered to be competitive for a heavy-duty truck, although it still lagged behind gasoline-powered alternatives. Reliability was also a strong point, with the Cummins engine proving to be exceptionally durable over the long term.
Legacy
The 2013-2018 RAM 2500/3500 with the 6.7L Cummins and automatic transmission has established a strong reputation for reliability and longevity. These trucks continue to be highly sought after on the used car market, commanding premium prices due to their proven track record. The Cummins engine, in particular, is known for its ability to accumulate high mileage with minimal maintenance. While modern heavy-duty trucks offer even more power and technology, this generation remains a popular choice for those seeking a capable, reliable, and comfortable workhorse.
