Cummins QSK19 Marine Engine

Up-Close at the 2023 Pacific Marine Expo in Seattle

Video Above:
Captured on a cell phone at the 2023 Pacific Marine Expo in Seattle, this footage shows the Cummins QSK19 marine engine live on display—highlighting its rugged build and reputation as a powerhouse in commercial marine operations.

Introduction

The Cummins QSK19 isn’t just an engine—it’s a backbone for commercial marine vessels worldwide. From tugboats and ferries to offshore support vessels, it delivers the brute strength, reliability, and serviceability demanded by marine professionals.

During the 2023 Pacific Marine Expo in Seattle, we had a chance to see the QSK19 in person. In this article, we’ll break down its features, popular applications, and why Diesel Pro Power is your go-to source for aftermarket Cummins QSK19 parts.

Key Features of the Cummins QSK19

1. Power and Performance
The QSK19 delivers 800–1,000 horsepower, depending on the configuration. Turbocharged and aftercooled, it offers consistent output even in extreme-duty cycles. Its high torque at low RPM is ideal for marine towing, maneuvering, and high-load conditions.

2. Modular Common Rail System (MCRS)
With its MCRS fuel system, the QSK19 ensures optimal combustion, precise fuel delivery, and better fuel economy. It also contributes to lower emissions and reduced engine noise—beneficial for workboat crews.

3. Dual ECM Redundancy
Built with dual Electronic Control Modules (ECMs), the engine can continue running if one ECM fails. This built-in redundancy is critical for vessels operating in remote or harsh environments.

4. Emission Standards
The QSK19 complies with IMO Tier II and select EPA Tier 3 standards. It’s a solid choice for fleets that need international compliance without compromising on power.

5. Extended Service Life
Designed for long-haul operations, the QSK19 features high-strength pistons, camshafts, and bearings. Many vessels report over 20,000 hours of runtime before needing major overhauls—making it one of the most cost-effective marine engines in its class.

Where You’ll Find the QSK19 at Work

The QSK19 is widely trusted in marine vessels that demand endurance and heavy-duty performance:

• Tugboats and pushboats

• Ferries and passenger craft

• Offshore supply vessels (OSVs)

• Crew transport boats

• Military patrol vessels

• Commercial fishing trawlers

It supports both keel cooling and heat exchanger configurations, making it flexible for various marine environments.

What Sets the QSK19 Apart?

Field Serviceability
One of the biggest benefits of the QSK19 is how easily it can be serviced in the field. Whether you’re working dockside or offshore, this engine is built to be torn down and rebuilt without complicated tools or procedures.

Global Support
As part of the Cummins family, the QSK19 has worldwide recognition. Mechanics know it, parts are widely available, and repair knowledge is shared across fleets.

Proven in Harsh Conditions
From the cold waters of Alaska to the Gulf of Mexico, this engine has been proven to perform in some of the world’s toughest marine settings.

Most Common QSK19 Parts You’ll Need

At Diesel Pro Power, we offer high-performance aftermarket parts that meet or exceed OEM standards. Below are some of the most commonly ordered items from our Cummins QSK19 parts catalog:

Rebuild Kits for Cummins QSK19

• Full overhaul kits with pistons, rings, liners, gaskets, and bearings

• Designed for both in-frame and out-of-frame rebuilds

• Matches OEM warranty specs

Injectors for Cummins QSK19

• Compatible with Modular Common Rail Systems

• Fully tested for flow and spray pattern

• Available individually or in matched sets

Water Pumps for Cummins QSK19

• Gear-driven and belt-driven options

• Suitable for both keel-cooled and heat-exchanger engines

• Includes seals and gaskets

  ---

Raw Water Pumps for Cummins QSK19

• Includes seals and gaskets

Cylinder Heads for Cummins QSK19

• Fully assembled or bare

• Pressure-tested and inspected for cracks and wear

• Available for single replacement or full engine service

  ---

Turbochargers for Cummins QSK19

• Direct replacement turbos

• Balanced and flow-tested for maximum efficiency

• Helps recover lost horsepower from worn units

Why Buy From Diesel Pro Power?

Same-Day Shipping on Most Orders
We know downtime is expensive. That’s why we ship most parts the same day you order.

Expert Customer Support
Our bilingual customer service team is available by phone, WhatsApp, or chat to help you select the right parts.

Global Shipping
We deliver to over 180 countries and offer fast freight options for large items like cylinder heads and rebuild kits.

Aftermarket Parts You Can Trust
We specialize in premium aftermarket components that perform as good—or better—than OEM. Every product is backed by our in-house quality checks.

QSK19: Specs at a Glance

• Horsepower: 800–1,000 HP

• Displacement: 19 liters

• Configuration: Inline 6-cylinder, turbocharged & aftercooled

• Fuel System: Modular Common Rail

• Cooling System: Keel or heat exchanger

• ECM: Dual-redundant, marine-rated

• Emission Rating: IMO Tier II / EPA Tier 3

• Applications: Heavy-duty commercial marine vessels

Final Thoughts

The Cummins QSK19 is more than a workhorse—it’s a fleet favorite that continues to set the standard for durability, torque, and rebuildability. Whether you’re managing one vessel or an entire fleet, Diesel Pro Power is ready to support you with the parts you need to keep running strong.

If you’re operating a QSK19 and need fast, reliable aftermarket parts, view our full catalog for Cummins QSK19 or contact us for personalized assistance.

Need Help Identifying the Right Parts?
Let our team assist you. Reach out by phone, WhatsApp, or through our Contact Us page, and we’ll match your serial number to the correct rebuild kit, injector, or cooling system component in minutes.

Please follow and like us: