Cummins QSM11 715HP Marine Engine – Product Overview
The Cummins QSM11 715HP Marine Diesel Engine is engineered for vessel owners, commercial operators, and repower buyers who need serious inboard diesel power with strong torque, electronic control, and dependable Cummins Marine reliability. Based on the Cummins QSM11 Marine Diesel platform, this engine delivers 715 HP, or approximately 526 kW, from a 10.8L inline 6-cylinder, 4-stroke diesel configuration.
This model uses High-Pressure Common Rail fuel injection, Cummins Quantum ECM electronic management, and turbocharged and aftercooled aspiration to support strong power delivery, efficient combustion, smooth response, and dependable operation under marine load.
The supplied specification lists this engine as new and manufactured by Cummins Marine for inboard marine propulsion. It is also listed with EPA Tier 3, IMO Tier II, and EU Stage IIIA emissions compliance, making configuration verification important for commercial and regulated operating environments.
For customers comparing Cummins QSM engines, 715HP marine diesel engines, high-output inboard propulsion engines, commercial marine diesel engines, and diesel repower options, the Cummins QSM11 715HP is a serious and capable choice.
Built for High-Output Inboard Marine Propulsion
The Cummins QSM11 715HP Marine Diesel Engine is designed for vessels requiring strong inboard marine propulsion with dependable torque and reliable drivetrain performance.
Inboard diesel engines are widely used in sportfishing boats, offshore yachts, patrol craft, workboats, passenger vessels, commercial fishing vessels, utility boats, and offshore service vessels because they support robust power delivery, service access, and long-term propulsion reliability.
With 715 HP, this engine is positioned for vessels that need serious horsepower from a proven inline 6-cylinder diesel platform. It is suitable for compatible boats that require strong acceleration, confident cruising power, dependable heavy-load performance, and professional-grade propulsion.
For buyers searching for a Cummins QSM11 marine diesel engine for sale, this 715HP model offers a strong high-output configuration.
715HP Cummins Marine Diesel Power
The Cummins QSM11 Marine Diesel Engine delivers 715 horsepower, equal to approximately 526 kW, giving compatible vessels powerful and dependable diesel propulsion.
A 715HP marine diesel engine is suitable for larger vessels that carry passengers, fishing equipment, commercial tools, fuel, safety gear, cargo, onboard systems, or offshore equipment. This power class supports strong cruising ability, load handling, acceleration, and dependable operating performance.
For sportfishing boats and offshore yachts, the 715HP rating supports high-performance diesel propulsion. For patrol vessels and workboats, it provides strong response and reliable duty capability. For commercial craft and passenger vessels, it offers dependable Cummins power in a respected marine diesel platform.
For customers searching for a Cummins 715HP marine engine, the QSM11 is a serious choice for demanding applications.
10.8L Inline 6-Cylinder Diesel Platform
The Cummins QSM11 715HP Marine Diesel Engine is built around a 10.8L inline 6-cylinder, 4-stroke diesel platform.
The inline 6-cylinder layout is valued in marine propulsion because it supports smooth operation, strong torque delivery, balanced running, and practical service access. The 10.8L displacement gives the engine the capacity needed to produce high horsepower and strong marine torque for heavier vessels and demanding duty cycles.
The supplied bore and stroke are 125 mm x 147 mm, supporting the engine’s displacement and torque-producing character.
For customers searching for a 10.8L marine diesel engine, the Cummins QSM11 715HP provides a powerful and proven marine propulsion platform.
Rated Speed Up to 2500 RPM
The Cummins QSM11 715HP Marine Diesel Engine is listed with rated speed up to 2500 RPM.
Rated speed is an important specification because it must be matched with the vessel’s gearbox ratio, shaft system, propeller size, hull design, expected load, and duty cycle. A properly matched propulsion system allows the engine to operate within the correct range under real marine load.
For repower projects, rated speed should be considered carefully when replacing older engines. Propeller matching, gear ratio, vessel weight, and sea trial results should all support the engine’s expected operating profile.
For buyers comparing 2500 RPM marine diesel engines, the QSM11 715HP provides strong output in a practical high-performance diesel range.
High-Pressure Common Rail Fuel Injection
The Cummins QSM11 715HP Marine Diesel Engine features High-Pressure Common Rail fuel injection, also known as HPCR.
HPCR fuel injection precisely controls fuel delivery, helping support smoother combustion, improved throttle response, efficient fuel use, and refined diesel operation. In marine propulsion, fuel delivery precision is important because engine load changes during acceleration, cruising, docking, maneuvering, and operation in rough or demanding conditions.
The HPCR system helps the QSM11 deliver controlled power across a wide operating range while supporting efficient combustion and strong performance.
For customers searching for a Cummins HPCR marine diesel engine, the QSM11 715HP provides modern fuel system technology in a high-output inboard platform.
Cummins Quantum ECM Electronic Control
The Cummins QSM11 Marine Diesel Engine is managed by a Cummins Quantum ECM.
The Quantum ECM monitors and controls key engine functions, helping support fuel delivery, performance consistency, diagnostics, engine protection, and operating efficiency. Electronic control is especially useful in modern marine diesel engines because it supports more precise operation and better service visibility than older mechanical platforms.
For operators running larger vessels, commercial craft, patrol boats, and offshore yachts, ECM control supports predictable response and improved confidence under changing load conditions.
For customers searching for an electronically controlled Cummins marine engine, the QSM11 715HP provides a strong Quantum ECM-managed propulsion platform.
Turbocharged and Aftercooled Performance
The Cummins QSM11 715HP Marine Diesel Engine is turbocharged and aftercooled.
Turbocharging increases airflow into the engine, helping produce high horsepower from the 10.8L displacement. Aftercooling reduces compressed intake air temperature, improving air density and supporting efficient combustion under marine load.
Marine diesel engines often work under sustained resistance from water, vessel weight, cargo, passengers, wind, current, and operating duty. Turbocharged and aftercooled performance helps the QSM11 maintain strong output and dependable response in these conditions.
For customers comparing turbocharged 715HP marine diesel engines, this Cummins QSM11 configuration offers the performance technology required for serious inboard propulsion.
Maximum Torque Up to Approximately 2305 Nm
The supplied specification lists maximum torque up to approximately 2305 Nm.
Torque is one of the most important performance factors in marine propulsion because boats must push through water resistance, carry heavy loads, accelerate under pressure, and maintain cruising performance in changing sea conditions.
High torque helps improve low-speed control, acceleration, load carrying, and operating confidence. For patrol vessels, workboats, sportfishing boats, offshore yachts, and commercial craft, strong torque can make a noticeable difference in real operating performance.
For customers searching for a high-torque Cummins marine diesel engine, the QSM11 715HP offers serious torque capability from a proven 10.8L diesel platform.
Heat Exchanger With Seawater Cooling
The Cummins QSM11 715HP Marine Diesel Engine uses a heat exchanger with seawater cooling.
A heat exchanger cooling system helps regulate engine temperature while keeping the internal coolant circuit separated from direct seawater exposure. This supports stable operating temperature and helps reduce internal corrosion risk when properly maintained.
Seawater cooling through a heat exchanger is widely used in marine diesel applications because it provides effective thermal control while supporting long-term engine protection.
Buyers should confirm seawater intake routing, heat exchanger condition, hose layout, cooling capacity, engine room ventilation, and service access before installation.
For customers comparing heat exchanger cooled marine diesel engines, the QSM11 715HP offers a marine-ready cooling configuration for demanding propulsion use.
Emissions Compliance for Regulated Marine Use
The supplied specification lists the Cummins QSM11 715HP Marine Diesel Engine with EPA Tier 3, IMO Tier II, and EU Stage IIIA emissions compliance.
Emission compliance is important for commercial operators, passenger vessels, government fleets, and vessels operating in regulated waters. Requirements can vary by region, vessel type, installation date, duty cycle, and final engine configuration.
Before purchase, buyers should confirm the exact emissions documentation needed for their vessel and operating area.
For customers searching for a Cummins marine diesel engine with EPA Tier 3 compliance, this QSM11 listing provides a strong compliance-focused specification, subject to final configuration verification.
Practical Dimensions for Installation Planning
The Cummins QSM11 715HP Marine Diesel Engine has listed dimensions of approximately 1495 mm in length, 1254 mm in width, and 1143 mm in height.
These dimensions are important for engine room planning, service clearance, lifting access, mount layout, cooling routes, exhaust routing, and drivetrain alignment. High-output inboard engines require careful planning before installation, especially during repower projects.
Buyers should compare these dimensions with the existing engine bay, hatch access, maintenance space, gearbox location, shaft line, and surrounding equipment.
For customers planning a Cummins QSM11 repower, these listed dimensions support better installation preparation.
Approximate Dry Weight for Repower Planning
The supplied specification lists approximate dry weight at 1188kg, or about 2619 lb.
Dry weight affects vessel balance, engine bed design, lifting requirements, trim, shaft alignment, gearbox selection, and handling characteristics. A high-output 715HP inboard marine diesel engine must be installed with proper attention to structural support and drivetrain compatibility.
For repower buyers, comparing the QSM11’s dry weight against the previous engine is essential. Weight changes can affect boat trim, performance, and load distribution.
Before installation, buyers should confirm lifting access, mount strength, engine bed condition, gearbox fitment, service clearance, and final vessel balance.
Suitable for Sportfishing Boats
The Cummins QSM11 715HP Marine Diesel Engine is a powerful option for sportfishing boats that need dependable offshore propulsion.
Sportfishing vessels often carry fuel, ice, fishing gear, electronics, safety equipment, crew, passengers, and heavy operating loads. They need engines that can deliver strong acceleration, steady cruising, and reliable output in changing offshore conditions.
The 715HP output, 10.8L displacement, HPCR fuel system, Quantum ECM, high torque, and turbocharged aftercooled performance make the QSM11 a serious option for sportfishing applications.
For customers searching for a Cummins diesel engine for sportfishing boats, the QSM11 715HP provides strong and dependable Cummins Marine performance.
Suitable for Offshore Yachts
The Cummins QSM11 715HP Marine Diesel Engine is also suitable for compatible offshore yachts that require powerful inboard diesel propulsion.
Offshore yachts need smooth cruising power, dependable operation, efficient performance, and strong confidence during longer trips. The QSM11 platform provides a strong balance of horsepower, torque, displacement, and serviceability for many larger yacht applications.
Its electronic control system supports refined response, while turbocharged aftercooled performance helps maintain power under load.
For customers searching for a Cummins marine diesel engine for yachts, the QSM11 715HP is a strong candidate for compatible installations and repower projects.
Suitable for Patrol Vessels
The Cummins QSM11 715HP Marine Diesel Engine is suitable for patrol vessels that need dependable acceleration, strong response, and professional-grade propulsion.
Patrol craft may operate at varied speeds, carry specialized equipment, and require reliable power during demanding duty cycles. The QSM11’s high horsepower rating, strong torque, electronic fuel delivery, and Cummins Quantum ECM help support these needs.
For customers searching for a 715HP patrol boat diesel engine, this Cummins QSM11 model offers serious propulsion capability.
Suitable for Workboats and Commercial Vessels
The Cummins QSM11 715HP Marine Diesel Engine is built for workboats and commercial vessels that require dependable power, strong torque, and serviceability.
Commercial vessels often run for long hours under load. They may carry cargo, tools, crew, fuel, passengers, safety gear, and specialized equipment. These conditions demand engines that can deliver consistent output and remain practical to service.
The QSM11’s 10.8L displacement, 715HP output, HPCR fuel system, Quantum ECM, and heat exchanger seawater cooling help support demanding marine work.
For customers searching for a Cummins commercial marine diesel engine, this QSM11 model provides trusted high-output performance.
Suitable for Passenger Vessels
The Cummins QSM11 715HP Marine Diesel Engine can also support compatible passenger vessels that need reliable propulsion and regulated-use confidence.
Passenger vessels require dependable operation, emissions documentation, serviceability, and consistent output. The listed compliance with EPA Tier 3, IMO Tier II, and EU Stage IIIA makes this engine relevant for buyers who must consider regulatory requirements.
Final certification should always be verified before installation.
For customers searching for a marine diesel engine for passenger vessels, the Cummins QSM11 715HP is a strong candidate for compatible applications.
Strong Candidate for Repower Projects
The Cummins QSM11 715HP Marine Diesel Engine is a strong candidate for compatible repower projects.
Repowering can help replace older engines with a modern diesel platform offering improved fuel delivery, electronic control, serviceability, and performance. The QSM11’s 715HP output, 10.8L displacement, inline 6-cylinder architecture, HPCR fuel system, Quantum ECM, and emissions compliance listing make it attractive for many vessel upgrades.
Repower buyers should confirm engine room dimensions, mount layout, gearbox compatibility, shaft alignment, propeller matching, cooling setup, exhaust routing, electrical integration, controls, emissions documentation, duty rating, and final commissioning requirements.
For customers searching for a Cummins QSM11 715HP repower engine, this model offers serious Cummins Marine propulsion capability.
Why the Cummins QSM11 715HP Is a Smart Choice
The Cummins QSM11 715HP Marine Diesel Engine stands out because it combines 715 HP output, 10.8L inline 6-cylinder diesel displacement, High-Pressure Common Rail fuel injection, Cummins Quantum ECM, turbocharged aftercooled performance, heat exchanger seawater cooling, high torque, and listed emissions compliance.
Many buyers in this category need more than horsepower. They need torque, electronic control, efficient fuel delivery, cooling reliability, emissions documentation, practical installation dimensions, and trusted long-term serviceability.
The QSM11 715HP delivers these strengths in a proven Cummins Marine platform for sportfishing boats, offshore yachts, patrol vessels, workboats, commercial craft, passenger vessels, and repower projects.
For customers searching for a Cummins QSM11 715HP Marine Diesel Engine for sale, this engine offers dependable high-output Cummins power for demanding marine applications.
Who Should Choose This Marine Diesel Engine
The Cummins QSM11 715HP Marine Diesel Engine is best for boat owners, commercial operators, marine installers, fleet buyers, and repower customers who need a high-output 715HP inboard marine diesel engine with strong torque and modern electronic control.
It is suitable for sportfishing boats, offshore yachts, patrol vessels, workboats, passenger vessels, commercial craft, utility vessels, and compatible repower projects.
This engine is especially useful for buyers who want a Cummins QSM11 marine diesel engine with 10.8L displacement, inline 6-cylinder construction, HPCR fuel injection, Cummins Quantum ECM, turbocharged aftercooled performance, heat exchanger seawater cooling, and listed marine emissions compliance.
Buyers who need a complete engine-and-gearbox package, different horsepower rating, specific duty rating, alternative cooling configuration, rotation confirmation, or exact emissions certification should confirm the final Cummins Marine configuration before purchase.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Cummins QSM11 715HP Marine Diesel Engine |
| Brand / Manufacturer | Cummins Marine |
| Engine Model | Cummins QSM11 Marine Diesel |
| Product Type | Inboard marine diesel engine |
| Rated Power | 715 HP / approx. 526 kW |
| Rated Speed | Up to 2500 RPM |
| Engine Configuration | Inline 6-cylinder, 4-stroke diesel |
| Displacement | 10.8 litres |
| Bore x Stroke | 125 mm x 147 mm |
| Aspiration | Turbocharged and aftercooled |
| Fuel System | High-Pressure Common Rail (HPCR) |
| Electronic Control | Cummins Quantum ECM |
| Maximum Torque | Up to approx. 2305 Nm |
| Cooling System | Heat exchanger with seawater cooling |
| Approx. Dry Weight | Approx. 1188kg / 2619 lb |
| Engine Length | Approx. 1495 mm |
| Engine Width | Approx. 1254 mm |
| Engine Height | Approx. 1143 mm |
| Emissions Compliance | EPA Tier 3, IMO Tier II, EU Stage IIIA |
| Application | Inboard marine propulsion |
| Engine Condition | New |
| Recommended Applications | Sportfishing boats, offshore yachts, patrol vessels, workboats, commercial craft, passenger vessels, repower projects |
| Main Benefits | 715 HP output, 10.8L inline-6 power, HPCR fuel system, Quantum ECM, high torque, emissions compliance, heat exchanger cooling |
Key Product Details and Specifications
The Cummins QSM11 715HP Marine Diesel Engine is a new inboard marine propulsion engine manufactured by Cummins Marine.
It is based on the Cummins QSM11 Marine Diesel platform.
The engine delivers 715 HP, equal to approximately 526 kW.
The rated speed is listed as up to 2500 RPM.
The engine uses an inline 6-cylinder, 4-stroke diesel configuration.
Displacement is listed as 10.8 litres.
The bore and stroke are 125 mm x 147 mm.
The engine is turbocharged and aftercooled for strong output under marine load.
It uses High-Pressure Common Rail fuel injection for precise fuel delivery.
Engine operation is managed by a Cummins Quantum ECM.
Maximum torque is listed at up to approximately 2305 Nm.
Cooling is provided by a heat exchanger with seawater cooling.
The approximate dry weight is 1188kg, or about 2619 lb.
The listed dimensions are approximately 1495 mm long, 1254 mm wide, and 1143 mm high.
The supplied specification lists emissions compliance as EPA Tier 3, IMO Tier II, and EU Stage IIIA.
The engine is designed for inboard marine propulsion in commercial, recreational, patrol, passenger, offshore, and repower applications.
Buy With Confidence
When buying the Cummins QSM11 715HP Marine Diesel Engine, customers should confirm vessel type, duty rating, engine room dimensions, mount layout, gearbox compatibility, shaft alignment, propeller matching, cooling configuration, seawater intake routing, exhaust routing, fuel system requirements, Quantum ECM integration, electrical setup, controls, emissions documentation, and service access.
This model is a strong choice for buyers who want a Cummins QSM11 marine diesel engine with 715 HP, 10.8L inline 6-cylinder construction, HPCR fuel injection, Quantum ECM electronic control, turbocharged aftercooled performance, high torque, and heat exchanger seawater cooling.
Customers can compare this product with related Cummins QSM engines, Cummins QSC and QSL marine engines, marine gearboxes, shaft-drive components, fuel filtration systems, cooling system parts, exhaust components, engine mounts, controls, propeller matching services, and repower accessories.
Professional installation is recommended. Correct engine alignment, gearbox matching, cooling setup, fuel delivery, exhaust routing, ECM integration, mount installation, propeller matching, emissions verification, and final commissioning help support reliable performance and long-term engine life.
Frequently Asked Questions
What is the Cummins QSM11 715HP Marine Diesel Engine used for?
The Cummins QSM11 715HP Marine Diesel Engine is used for inboard marine propulsion in sportfishing boats, offshore yachts, patrol vessels, commercial craft, passenger vessels, workboats, and compatible repower projects.
How much power does the Cummins QSM11 715HP engine produce?
This engine delivers 715 HP, approximately 526 kW.
What is the displacement of the Cummins QSM11 715HP marine engine?
The supplied specification lists displacement as 10.8 litres.
What fuel system does the Cummins QSM11 715HP use?
The engine uses High-Pressure Common Rail fuel injection, also known as HPCR.
What electronic control system does this engine use?
The Cummins QSM11 715HP is managed by a Cummins Quantum ECM.
What is the rated speed of this engine?
The rated speed is listed as up to 2500 RPM.
What is the maximum torque of the Cummins QSM11 715HP?
The supplied specification lists maximum torque up to approximately 2305 Nm.
What emissions standards are listed for this engine?
The supplied specification lists EPA Tier 3, IMO Tier II, and EU Stage IIIA emissions compliance. Buyers should confirm final certification for their vessel and operating region.
