Fifty years ago, the Cummins 38L high-horsepower engine was born to deliver greater power, enhanced reliability, and the ability to meet demanding application requirements. From mechanical control platforms to intelligent electronic systems, from the classic K Series K38 to the KTA38 and then to the QSK38-join us in witnessing its powerful legacy spanning half a century.
Technological Leap, Innovation Unceasing
As Cummins' core high-horsepower platform, the 38L engine is built on a robust architecture, delivering long service life, high load capacity, and exceptional reliability.
Its power output has increased by 337% compared to the first-generation model. Its strength lies not only in power performance but also in continuous iterative upgrades across intake systems, cooling systems, fuel systems, control systems, power cylinder design, and overall machine integration capabilities.
- Construction machinery: 820–1350 horsepower
- Railway locomotives: 660–1350 horsepower
- Marine applications: 800–1600 horsepower
Fuel system evolution: PT → MCRS → XPI capability extended within the platform architecture (PTMCRS)
The 38L engine continuously evolves based on customer operating conditions and market demands, consistently innovating in platform scalability, adaptability, and engineering resilience-meeting diverse application scenarios, power levels, and emission requirements.
The 38L builds strength through its architecture and achieves lasting success through innovation.
Field-verified, trusted by customers
For over 50 years, the 38L platform has evolved with the times, delivering reliable power for demanding applications across mining, power generation, marine, oil & gas, and rail transit. With a cumulative installed base of 176,999 units, it is capable of operating at altitudes up to 5,500 meters-making it ideal for high-altitude environments.
We consistently deliver dependable power, broad application adaptability, exceptional uptime, and long-term value.
The 38L engines deployed in the Three Gorges Project have accumulated over 18,000 to 22,000 hours of operation, with benchmark units reaching approximately 22,000 hours and some achieving 17,500 hours without major overhaul.
Rooted in China, empowering the future
From local assembly to indigenous R&D, the 38L engine has forged a solid evolutionary path in China. This journey has enabled seamless integration with local supply chains, design optimization, global engineering collaboration, and enhanced validation efficiency. While maintaining its core strengths in reliability and durability, the 38L platform continues to improve performance and expand into new application areas.
Data shows that Chongqing Cummins' 38L/K38 products have surpassed 50,000 units produced. From an initial annual output of around 12 units to over 2,800 units in recent years, this growth reflects strong market recognition. Today, the 38L engine stands not only as a symbol of China's advancing engineering capabilities but also as a powerful platform for future innovation-delivering higher efficiency, lower emissions, and smarter applications.