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K38
Cummins

The Cummins K38 series represents a benchmark in high-displacement, heavy-duty diesel engine technology. Engineered for durability, fuel efficiency, and immense power output, this versatile 38-liter platform is designed to serve as the prime mover for the world's most demanding industrial, power generation, and mobile equipment. Renowned for its robust construction and proven performance across millions of operating hours, the K38 series delivers unmatched reliability to maximize uptime and minimize total cost of ownership in critical operations.
| Feature | Specification |
|---|---|
| Series | Cummins K38 |
| Configurations | In-line 6-Cylinder & V12 |
| Displacement | 38 Liters |
| Power Range | ~600 kW to 1250+ kW (800 HP to 1700+ HP) |
| Aspiration | Turbocharged & Aftercooled (TTA) |
| Fuel System | Cummins PT or Common Rail (Model dependent) |
| Core Design | Heavy-duty, long-life architecture |
The K38 platform's power and adaptability make it the engine of choice across multiple high-stakes industries:
Power Generation: The foundation for large prime and standby diesel generator sets, providing critical electricity for data centers, hospitals, industrial plants, and mining operations.
Heavy Machinery & Mining: Powers large excavators, mining haul trucks, bulldozers, and wheel loaders that operate continuously in the most severe environments.
Industrial & Marine: Serves as reliable propulsion for large workboats, tugboats and as a mechanical drive for industrial pumps and compressors.
Specialized Applications: Includes gas compression (KTA38-GC variant) and other custom configurations.
Legendary Heavy-Duty Durability: Built on an ultra-rigid cast-iron platform with features like replaceable wet cylinder liners and forged steel crankshafts. This construction is designed for high cylinder pressures and extended service intervals, ensuring million-hour-plus potential in well-maintained applications.
Advanced Combustion Systems: Depending on the model and emission tier, utilizes either the famously robust Cummins PT fuel system or a modern high-pressure common rail system. Both are engineered for precise fuel delivery, excellent combustion efficiency, and optimized fuel economy across the entire load range.
High-Efficiency Turbocharging: A sophisticated turbocharged and aftercooled (TTA) air handling system delivers a high mass of cool, dense air to the cylinders. This maximizes power density, improves response, and reduces thermal loading on components for greater longevity.
Application-Specific Engineering: The K38 is not a one-size-fits-all engine. It is meticulously configured into distinct models (e.g., "-G" for generator drive, "-C" for industrial/mechanical drive, "-GC" for gas compression) with tailored cooling, governing, and auxiliary systems to excel in its dedicated role.

The Cummins K38 series represents a benchmark in high-displacement, heavy-duty diesel engine technology. Engineered for durability, fuel efficiency, and immense power output, this versatile 38-liter platform is designed to serve as the prime mover for the world's most demanding industrial, power generation, and mobile equipment. Renowned for its robust construction and proven performance across millions of operating hours, the K38 series delivers unmatched reliability to maximize uptime and minimize total cost of ownership in critical operations.
| Feature | Specification |
|---|---|
| Series | Cummins K38 |
| Configurations | In-line 6-Cylinder & V12 |
| Displacement | 38 Liters |
| Power Range | ~600 kW to 1250+ kW (800 HP to 1700+ HP) |
| Aspiration | Turbocharged & Aftercooled (TTA) |
| Fuel System | Cummins PT or Common Rail (Model dependent) |
| Core Design | Heavy-duty, long-life architecture |
The K38 platform's power and adaptability make it the engine of choice across multiple high-stakes industries:
Power Generation: The foundation for large prime and standby diesel generator sets, providing critical electricity for data centers, hospitals, industrial plants, and mining operations.
Heavy Machinery & Mining: Powers large excavators, mining haul trucks, bulldozers, and wheel loaders that operate continuously in the most severe environments.
Industrial & Marine: Serves as reliable propulsion for large workboats, tugboats and as a mechanical drive for industrial pumps and compressors.
Specialized Applications: Includes gas compression (KTA38-GC variant) and other custom configurations.
Legendary Heavy-Duty Durability: Built on an ultra-rigid cast-iron platform with features like replaceable wet cylinder liners and forged steel crankshafts. This construction is designed for high cylinder pressures and extended service intervals, ensuring million-hour-plus potential in well-maintained applications.
Advanced Combustion Systems: Depending on the model and emission tier, utilizes either the famously robust Cummins PT fuel system or a modern high-pressure common rail system. Both are engineered for precise fuel delivery, excellent combustion efficiency, and optimized fuel economy across the entire load range.
High-Efficiency Turbocharging: A sophisticated turbocharged and aftercooled (TTA) air handling system delivers a high mass of cool, dense air to the cylinders. This maximizes power density, improves response, and reduces thermal loading on components for greater longevity.
Application-Specific Engineering: The K38 is not a one-size-fits-all engine. It is meticulously configured into distinct models (e.g., "-G" for generator drive, "-C" for industrial/mechanical drive, "-GC" for gas compression) with tailored cooling, governing, and auxiliary systems to excel in its dedicated role.
