- Description
Description
Cummins QSM11 660HP Marine Diesel Engine
The Cummins QSM11 660HP Marine Diesel Engine is a heavy-duty inboard marine propulsion engine engineered for high-performance vessels that require exceptional torque, reliability, and continuous-duty capability. Built on the proven Cummins QSM11 platform, this 10.8-liter inline six-cylinder turbocharged marine diesel engine delivers powerful acceleration, strong mid-range torque, and dependable propulsion performance for offshore sportfishing yachts, commercial fishing vessels, patrol boats, passenger vessels, and heavy-duty workboats.
The Cummins QSM11 marine engine series is widely recognized for its advanced electronic fuel system, robust internal construction, and high power density. The platform offers a power range from approximately 295 to more than 700 horsepower, making the 660HP configuration one of the most powerful and popular ratings within the QSM11 family for high-performance marine propulsion applications.
At Coastal Wave Marine, the Cummins QSM11 660HP marine propulsion engine is supplied as a brand-new genuine Cummins marine diesel engine, complete with standard manufacturer accessories and configuration options suitable for new vessel construction, commercial fleet installations, and marine repower projects.
Engine Engineering and Performance
The Cummins QSM11 660HP marine diesel engine features a four-stroke inline 6-cylinder design with a displacement of 10.8 liters, delivering strong torque and reliable propulsion power for demanding marine operations.
The engine incorporates Cummins CELECT electronic fuel injection, a full-authority electronic system that precisely controls fuel delivery to optimize combustion efficiency, improve throttle response, and reduce fuel consumption during operation.
A turbocharged and seawater-aftercooled air system increases intake air density entering the combustion chamber, enabling the engine to produce 660 horsepower of dependable propulsion power while maintaining optimal operating temperatures and combustion efficiency.
The engine is also equipped with Cummins Quantum electronic engine management, which continuously monitors operating parameters such as fuel pressure, engine speed, temperature, and load conditions to optimize performance and provide advanced diagnostic capabilities.
With its high torque output, heavy-duty construction, and excellent reliability, the Cummins QSM11 660HP inboard marine engine is widely selected by vessel owners and shipyards searching for Cummins marine engines for sale, 660HP marine diesel engines, or high-performance marine propulsion engines for offshore vessels.
Cummins QSM11 660HP Marine Engine Specifications
| Specification | Details |
|---|---|
| Engine Model | Cummins QSM11 Marine Diesel |
| Rated Power | 660 HP |
| Engine Configuration | Inline 6-Cylinder, 4-Stroke Diesel |
| Displacement | 10.8 Liters (661 cu in) |
| Bore × Stroke | 125 mm × 147 mm |
| Aspiration | Turbocharged and Aftercooled |
| Fuel System | Cummins CELECT Electronic Fuel Injection |
| Electronic Control | Cummins Quantum ECM |
| Rated Speed | Up to ~2300 RPM |
| Cooling System | Heat Exchanger with Seawater Cooling |
| Approx. Dry Weight | ~1188 kg (≈2619 lb) |
| Engine Length | ~1495 mm |
| Engine Width | ~1254 mm |
| Engine Height | ~1143 mm |
| Application | Inboard Marine Propulsion |
| Engine Condition | New |
| Manufacturer | Cummins Marine |
The QSM11 engine architecture is designed with a turbocharged inline-six configuration and 10.8-liter displacement, delivering high torque output and strong acceleration for heavy marine loads.
Technical Features and Advantages
High-Power Marine Propulsion
The Cummins QSM11 660HP diesel engine provides strong acceleration and sustained propulsion power, making it ideal for high-speed offshore vessels and demanding commercial applications.
CELECT Electronic Fuel Injection System
The Cummins CELECT fuel system optimizes fuel delivery and combustion efficiency, improving fuel economy, engine responsiveness, and reduced smoke emissions.
Turbocharged Aftercooled Air System
The turbocharger and aftercooler increase intake airflow and combustion efficiency, allowing the engine to maintain consistent horsepower output under heavy marine loads.
Intelligent Electronic Engine Control
The Cummins Quantum ECM monitors engine performance parameters and provides real-time diagnostics to maintain optimal engine operation.
Heavy-Duty Marine Construction
The engine incorporates marine-grade cast-iron components, corrosion-resistant materials, and heavy-duty cooling systems designed for continuous marine operation.
Typical Vessel Applications
The Cummins QSM11 660HP inboard marine diesel engine is commonly installed in:
Offshore sportfishing yachts
High-performance cruising vessels
Commercial fishing vessels
Patrol and security boats
Offshore service vessels
Passenger transport vessels
Buyers searching online for Cummins marine engines for sale, 660HP marine diesel engines, Cummins boat engines, Cummins QSM11 propulsion engines, or marine repower engines frequently select the QSM11 platform due to its reliability, high torque output, and proven performance in demanding marine environments.
Global Supply from Coastal Wave Marine
Coastal Wave Marine supplies new Cummins marine propulsion engines, marine generators, marine gearboxes, and complete marine propulsion systems to shipyards, commercial marine operators, and vessel owners worldwide.
Our services include:
Global export shipping and logistics coordination
Professional export crating for sea or air freight
Marine transmission pairing options
Engine configuration consultation
Support for vessel repower and new vessel construction
If you are looking to buy a Cummins QSM11 660HP Marine Diesel Engine, Coastal Wave Marine provides genuine Cummins propulsion engines with worldwide delivery and professional marine supply support. Contact our team to request pricing, configuration options, and shipping arrangements for your vessel or commercial fleet.