The diesel option for the 2004 Dodge Ram 2500 is the Cummins 5.9-liter Turbo Diesel inline-six (the 5.9L Cummins ISB).
Engine overview
The 2004 Ram 2500 with a diesel drivetrain uses a Cummins ISB 5.9L inline-six turbocharged engine. It employs a hydraulic-electronic unit injection (HEUI) system to deliver fuel under high pressure, paired with a turbocharger and intercooler to boost power and efficiency. This setup is renowned for strong low-end torque and towing capability, which has made it a staple in heavy-duty pickups for years.
Note: The Ram 2500 offered with this engine could be equipped with either an automatic or a manual transmission, depending on the specific trim and configuration, and output figures vary by calibration and emissions tuning.
Key specifications
Before listing core specs, here is a quick overview of the 5.9L Cummins used in the 2004 Ram 2500:
- Displacement: 5.9 liters (358 cubic inches)
- Configuration: Inline-6
- Valves: 24 valves
- Fuel system: HEUI electronic unit injection (high-pressure oil-driven injectors)
- Turbocharging: Turbocharged with intercooler
- Engine family: Cummins ISB
- Emissions controls: Includes EGR and related emission controls as required by 2004 regulations
Conclusion: The 5.9L Cummins ISB turbo diesel defined the 2004 Ram 2500's powertrain, delivering reliable torque and strong pulling capability while meeting the emissions standards of the time.
Additional context
For buyers or current owners, exact engine output can vary by year, configuration, and emissions tuning. To confirm the precise numbers for a specific vehicle, check the VIN-based build sheet or the engine’s label under the hood.
Summary
In summary, the 2004 Dodge Ram 2500's diesel engine is the Cummins 5.9-liter Turbo Diesel inline-six (ISB), a durable, turbocharged powerplant favored for towing and heavy-duty use, with specifications that reflect early-2000s Cummins technology and emissions requirements.