Cummins K19 vs QSK19 – What's the Difference?

When it comes to heavy-duty engines, Cummins K19 and QSK19 are two widely used models known for their reliability and power. While both are part of Cummins' 19-liter engine family, they serve different needs and industries based on their design and technological features.

K19: Classic Mechanical Power

The Cummins K19 is a mechanically controlled, inline 6-cylinder diesel engine known for:

l Simple maintenance

l Rugged durability

l Excellent performance in harsh environments

It's commonly used in:

l Construction equipment (e.g. cranes, bulldozers)

l Marine propulsion and auxiliary systems

l Mining trucks and drilling rigs

l Industrial generators

QSK19: Advanced Electronic Control

The QSK19 is an evolution of the K19, equipped with electronic fuel systems and advanced controls:

l Full-authority electronic engine management

l Higher fuel efficiency

l Lower emissions (meets Tier 2/Tier 3 standards)

l Optional dual-fuel configurations

Typical applications:

l High-end mining equipment

l Rail locomotives

l Oil & gas drilling units

l Power generation systems with emission regulations

Summary

If you're operating in remote areas with limited access to service, the K19 is often preferred. For applications requiring emissions compliance and efficiency, the QSK19 offers a modern solution.