2025 Ram 2500 Cummins Turbo Diesel – Complete Engine Specs & Performance Guide
2025 RAM 2500 Cummins Turbo Diesel
430 HP • 1,075 LB-FT • 36,610 LBS Towing
At Bluebonnet Chrysler Dodge, we’re excited to share the complete specifications for the revolutionary 2025 Ram 2500 Cummins turbo diesel. This completely redesigned 6.7L High-Output Cummins engine delivers unprecedented power, efficiency, and capability for the most demanding heavy-duty applications.
The 2025 Ram 2500 Cummins turbo diesel produces 430 horsepower and 1,075 lb-ft of torque, paired with the new TorqueFlite HD eight-speed automatic transmission. With a maximum towing capacity of 36,610 pounds when properly equipped, this is the most powerful Ram 2500 diesel ever offered. The engine represents a complete ground-up redesign, delivering improved power, efficiency, and serviceability.
This comprehensive guide covers everything you need to know about the Ram 2500 Cummins turbo diesel specifications, from engine performance and towing capabilities to advanced technology features that make this the ultimate heavy-duty workhorse for 2025.
2025 Cummins 6.7L High-Output Engine Specifications
The 2025 Ram 2500 Cummins turbo diesel features the most advanced 6.7L engine ever built. This completely redesigned powerplant represents over 35 years of Cummins and Ram partnership, delivering best-in-class capability with enhanced efficiency and serviceability.
Core Engine Specifications
The High-Output Cummins 6.7L turbo diesel is now the only diesel option available, as Ram discontinued the standard output version based on customer preference. Here are the complete specifications:
| Specification | 2025 Cummins 6.7L High-Output |
|---|---|
| Engine Type | 6.7L Inline-6 Turbo Diesel |
| Horsepower | 430 HP |
| Torque | 1,075 lb-ft |
| Transmission | TorqueFlite HD 8-Speed Automatic |
| Fuel System Pressure | 32,000 PSI (3,000 PSI increase) |
| 0-60 mph | Under 7 seconds |
| Max Towing Capacity | 36,610 lbs |
Revolutionary Engine Improvements
The 2025 Cummins 6.7L represents a complete redesign with significant technological advances:
- New Aluminum Intake Manifold: Replaced integrated intake with bolt-on design for longer intake runners and better charge cooling
- Enhanced Valvetrain: Intake and exhaust valves increased by 2mm for improved port flow
- Advanced Turbocharger: New turbo with smaller, faster-spooling turbine wheel for quicker response
- Helical Gear Drive: Cam and fuel-pump drives now use helical gears instead of spur gears for quieter operation
- Advanced Glow Plug System: Improved cold-start management for reliable operation in extreme weather
Maximum Towing and Payload Capabilities
The 2025 Ram 2500 Cummins turbo diesel delivers unprecedented capability with a maximum towing capacity of 36,610 pounds when properly equipped. This represents a significant increase over previous generations and establishes the Ram 2500 as the leader in three-quarter-ton towing capability.
Towing Capacity by Configuration
Towing capacity varies based on cab configuration, bed length, and drivetrain selection. Here’s a breakdown of maximum capabilities:
| Configuration | Drivetrain | Max Towing (lbs) | Payload (lbs) |
|---|---|---|---|
| Regular Cab, 8ft Bed | 4×2 | 36,610 | 4,000 |
| Crew Cab, 8ft Bed | 4×2 | 35,100 | 3,780 |
| Crew Cab, 6.4ft Bed | 4×2 | 34,800 | 3,660 |
| Crew Cab, 6.4ft Bed | 4×4 | 34,400 | 3,520 |
Advanced Towing Technology
The Ram 2500 Cummins includes sophisticated towing technologies that enhance capability and safety:
- Integrated Exhaust Brake: Works with tow/haul mode for confident stopping power with heavy loads
- Trailer Reverse Steering Control: Digital steering knob allows precise trailer maneuvering while backing up
- Auto-Level Rear Air Suspension: Automatically adjusts to maintain level ride height when hitched
- Multiple Camera Views: Surround view cameras with adjustable fisheye mirrors for complete visibility
- Trailer Tire Pressure Monitoring: Real-time monitoring of trailer tire pressure from the dashboard
TorqueFlite HD 8-Speed Transmission
The 2025 Ram 2500 Cummins pairs exclusively with the new TorqueFlite HD eight-speed automatic transmission, a significant upgrade from the previous six-speed unit. This advanced transmission is specifically engineered to handle the Cummins engine’s massive 1,075 lb-ft of torque while improving efficiency and performance.
Transmission Benefits and Features
The eight-speed transmission delivers multiple advantages over the previous six-speed:
- Lower Cruise RPM: Reduced engine speed on highways improves fuel economy and reduces noise
- Improved Grade Performance: Better gear spacing for enhanced performance on steep grades while towing
- Smooth Shifts: Advanced calibration provides imperceptible shifts even under heavy acceleration
- Digital Column Shifter: Modern electronic shifting with traditional column-mounted operation
Efficiency and Serviceability Improvements
The 2025 Cummins 6.7L turbo diesel incorporates numerous improvements that enhance both efficiency and ease of maintenance. These advances make the engine not only more powerful but also more practical for commercial and personal use.
Enhanced Serviceability Features
Ram and Cummins redesigned the engine layout to make routine maintenance easier and more accessible:
- Top-Side Service Access: Fuel and oil filters moved to engine top for easier replacement
- Improved Port Geometry: Top feed injectors and integrated fuel filters simplify service procedures
- 15,000-Mile Service Intervals: Extended maintenance intervals reduce ownership costs
- Quieter Operation: Helical gear drives significantly reduce engine noise and vibration
Cold Weather Performance
The 2025 Cummins includes advanced cold-start technology that ensures reliable operation in extreme conditions. The improved glow plug system reduces wait-to-start time and provides confident starting even in sub-zero temperatures, making the truck ready for work regardless of weather conditions.
Ram 2500 Cummins Trim Levels and Configurations
The 2025 Ram 2500 Cummins turbo diesel is available across multiple trim levels, each offering unique features while maintaining the same powerful 430 HP / 1,075 lb-ft engine. From the work-focused Tradesman to the luxury Laramie and off-road-capable Rebel, there’s a Cummins configuration for every need.
Available Trim Levels
| Trim Level | Cummins Available | Key Features | Best For |
|---|---|---|---|
| Tradesman | ✓ Available | Work-focused, vinyl seats, basic technology | Commercial fleet, work trucks |
| Big Horn | ✓ Available | Cloth seats, 8.4″ display, convenience features | Daily driving with work capability |
| Laramie | ✓ Available | Leather seats, 12″ display, luxury features | Premium towing and luxury |
| Rebel | ✓ Available | Off-road suspension, skid plates, 35″ tires | Off-road towing and adventure |
| Power Wagon | ✗ Not Available | Winch, disconnecting sway bar, lockers | Extreme off-road (gas only) |
Comparing Ram 2500 Cummins to Competitors
The 2025 Ram 2500 Cummins turbo diesel sets new benchmarks in the three-quarter-ton diesel truck segment. With 430 horsepower, 1,075 lb-ft of torque, and 36,610 pounds of towing capacity, it significantly outperforms key competitors in multiple categories.
| Truck | Engine | Horsepower | Torque | Max Towing |
|---|---|---|---|---|
| Ram 2500 Cummins | 6.7L I6 Turbo Diesel | 430 | 1,075 | 36,610 |
| Chevy Silverado 2500HD | 6.6L V8 Duramax | 445 | 910 | 36,000 |
| Ford F-250 Super Duty | 6.7L V8 Power Stroke | 475 | 1,050 | 24,500 |
The Ram 2500 Cummins leads in maximum towing capacity and torque output, while delivering competitive horsepower. The combination of the redesigned engine and eight-speed transmission provides superior performance for heavy-duty applications.
Frequently Asked Questions – Ram 2500 Cummins Turbo Diesel
How much horsepower does the 2025 Ram 2500 Cummins make?
The 2025 Ram 2500 Cummins turbo diesel produces 430 horsepower and 1,075 lb-ft of torque. This is the only Cummins option available, as Ram discontinued the standard output version.
What is the maximum towing capacity of the Ram 2500 Cummins?
The 2025 Ram 2500 Cummins can tow up to 36,610 pounds when properly equipped with the right configuration. This is the highest towing capacity in the three-quarter-ton segment.
What transmission comes with the Ram 2500 Cummins?
All 2025 Ram 2500 Cummins models come with the TorqueFlite HD eight-speed automatic transmission, an upgrade from the previous six-speed unit for improved efficiency and performance.
How fast is the Ram 2500 Cummins 0-60 mph?
The 2025 Ram 2500 Cummins can accelerate from 0-60 mph in under 7 seconds, making it surprisingly quick for a heavy-duty diesel truck.
What maintenance improvements are included in the 2025 Cummins engine?
The 2025 Cummins features top-side service access for fuel and oil filters, 15,000-mile service intervals, improved cold-start performance, and quieter operation thanks to helical gear drives.
Which Ram 2500 trim levels offer the Cummins engine?
The Cummins 6.7L turbo diesel is available on Tradesman, Big Horn, Laramie, and Rebel trim levels. It is not available on the Power Wagon, which uses the 6.4L HEMI V8 exclusively.
Experience the 2025 Ram 2500 Cummins Today
Ready to experience the most powerful Ram 2500 diesel ever built? Visit Bluebonnet Chrysler Dodge to explore our inventory and schedule a test drive.
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