Description
QSB6.7 Inboard Engine for Sale – Reliable Cummins Marine Power for Boats Worldwide
Looking for a powerful, dependable and fuel-efficient QSB6.7 inboard Engine for Sale? Buchi Trading Boat Engines provides marine engine solutions for boat owners, commercial operators, marine workshops, shipyards, importers and distributors looking for reliable diesel propulsion equipment.
The Cummins QSB6.7 is a 6.7-liter, six-cylinder marine diesel engine designed to deliver strong propulsion performance while maintaining the durability expected from a modern Cummins powerplant. Depending on the marine configuration and rating, the QSB6.7 platform is available across a broad range of power outputs. Cummins currently lists marine ratings extending from approximately 230 hp to 550 hp, making the engine suitable for a variety of recreational, commercial, government and marine propulsion applications.
If you are searching for a QSB6.7 inboard engine for sale USA, Australia, Europe, Africa, Asia, Canada, the Caribbean, Oceania, the Philippines or South America, choosing the correct engine configuration is essential. Horsepower, RPM, cooling arrangement, emissions certification, transmission compatibility, controls and installation dimensions should all be confirmed before purchasing.
Table of Contents
- What Is the Cummins QSB6.7 Marine Engine?
- QSB6.7 Inboard Engine Technical Specifications
- QSB6.7 Horsepower and Performance
- Why Choose a QSB6.7 Marine Diesel Engine?
- Applications of the QSB6.7 Inboard Engine
- QSB6.7 Inboard Engine for Sale USA
- QSB6.7 Inboard Engine for Sale Australia
- QSB6.7 Inboard Engine Asia and Oceania
- QSB6.7 Inboard Engine Europe and Africa
- QSB6.7 Inboard Engine Canada and the Americas
- Buying a QSB6.7 Inboard Engine
- Shipping and Export Considerations
- Why Buy From Buchi Trading Boat Engines?
- Request a Quote – RFQ
- Frequently Asked Questions
- Conclusion
What Is the Cummins QSB6.7 Marine Engine?
The QSB6.7 is part of Cummins’ well-known B Series/Quantum engine family. The marine version is configured specifically for propulsion and marine-duty applications.
It uses an inline six-cylinder, four-stroke diesel configuration, with a displacement of 6.7 liters (408 cubic inches). The marine engine employs turbocharging and aftercooling together with a high-pressure common-rail fuel system.
This combination gives boat operators a useful balance of power, throttle response, fuel efficiency and durability.
For buyers searching for a QSB6.7 inboard Engine for Sale, one of the most important advantages is the range of available marine ratings. Rather than being restricted to one output level, the QSB6.7 platform has multiple configurations designed around different vessel requirements.
QSB6.7 Inboard Engine Technical Specifications
Below are representative specifications published by Cummins for its QSB6.7 marine platform. Exact specifications can vary according to model, rating, accessories and application.
| Specification | QSB6.7 Marine |
|---|---|
| Engine type | Inline 6-cylinder, 4-stroke diesel |
| Displacement | 6.7 L / 408 cu in |
| Bore | 107 mm / 4.21 in |
| Stroke | 124 mm / 4.88 in |
| Aspiration | Turbocharged / aftercooled |
| Fuel system | High-pressure common rail |
| Marine power range | Approximately 230–550 hp depending on rating |
| Maximum listed marine speed | Up to approximately 3,300 RPM on selected ratings |
| Overall length | Approx. 1,263.8 mm |
| Overall width | Approx. 910.6 mm |
| Overall height | Approx. 857 mm |
| Approx. published weight | 658 kg / 1,450 lb |
| Application | Marine propulsion and related marine applications |
Cummins notes that dimensions and weight can vary according to the selected engine configuration, so buyers should request the exact specification sheet for the engine being purchased.
QSB6.7 Horsepower and Performance
One reason marine operators search for the QSB6.7 inboard Engine for Sale is its broad range of power ratings.
Cummins lists recreational marine QSB6.7 ratings including approximately 247 hp, 301 hp, 350 hp, 375 hp, 419 hp, 473 hp and 542 hp, with different ratings operating at different engine speeds. Commercial and light-duty marine versions are also available in several configurations.
The correct horsepower should be selected according to:
- Vessel size
- Hull design
- Displacement
- Propeller requirements
- Gearbox ratio
- Desired cruising speed
- Maximum vessel speed
- Operating conditions
- Commercial or recreational duty cycle
- Local emissions requirements
A larger engine is not automatically the best engine for every boat. Correct matching between the engine, transmission and propeller is critical for performance and long-term reliability.
Why Choose a QSB6.7 Marine Diesel Engine?
1. Six-Cylinder Diesel Performance
The inline-six configuration provides a strong foundation for marine propulsion. Six-cylinder engines are widely valued for smooth power delivery and their ability to provide substantial torque across the operating range.
2. High-Pressure Common-Rail Fuel System
The QSB6.7 marine platform uses high-pressure common-rail fuel technology. Cummins highlights this system for improving fuel delivery, reducing smoke and supporting quieter operation.
3. Turbocharged and Aftercooled
Turbocharging allows the engine to produce strong power from its 6.7-liter displacement. Aftercooling helps manage intake-air temperature and supports efficient combustion.
4. Wide Range of Applications
The QSB6.7 is available for recreational, commercial and other marine applications. Cummins identifies marine propulsion, commercial marine and auxiliary applications within its marine product range.
5. Global Support Potential
For international buyers, availability of technical support and parts is an important consideration. Cummins identifies marine product availability across North America, Latin America, Europe, Africa/Middle East and Asia-Pacific markets.
Applications of the QSB6.7 Inboard Engine
A QSB6.7 marine diesel engine can be considered for a wide range of vessels, subject to correct engine selection and installation.
Recreational Boats
The engine can provide the power required by larger pleasure boats, cruising vessels and other recreational craft where dependable diesel propulsion is important.
Commercial Boats
Commercial operators often prioritize reliability, operating economy, serviceability and engine durability. The QSB6.7 platform offers several marine ratings that can be matched to different commercial applications.
Workboats
Workboats may operate for long periods under demanding conditions. A properly specified QSB6.7 can provide the robust propulsion required for many working marine environments.
Fishing Boats
Fishing operators need engines that can deliver dependable propulsion during extended operations. Correct rating and cooling-system selection are particularly important when selecting an engine for a fishing vessel.
Marine Repower Projects
If an existing engine has reached the end of its service life, a QSB6.7 may be considered as part of a repower project. However, the installation should be professionally assessed for engine dimensions, shaft alignment, transmission, exhaust, cooling, controls and electrical requirements.
QSB6.7 Inboard Engine for Sale USA
For customers searching for a QSB6.7 inboard engine for sale USA, engine configuration and emissions requirements should be confirmed before purchase.
The United States has specific marine emissions and regulatory requirements that can differ according to engine model, installation, vessel type and year. Buyers should therefore provide the vessel information and intended application before finalizing an engine.
Buchi Trading Boat Engines can assist buyers in identifying the appropriate engine configuration based on their requirements.
QSB6.7 Inboard Engine for Sale Australia
Australia has a strong recreational and commercial boating market. Customers looking for a QSB6.7 inboard engine for sale Australia may require an engine for repowering, new vessel construction or commercial marine operations.
Before purchasing, Australian customers should verify:
- Engine rating
- Transmission compatibility
- Exhaust configuration
- Cooling system
- Electrical requirements
- Engine dimensions
- Certification requirements
- Shipping and import requirements
QSB6.7 Inboard Engine Asia and Oceania
The QSB6.7 is particularly relevant to marine operators throughout Asia-Pacific.
Customers searching for a QSB6.7 inboard engine Asia may include boat owners, shipyards, fishing operators, marine mechanics and engine distributors.
The engine can also attract interest from buyers looking for a QSB6.7 inboard motor Oceania, where commercial fishing, workboats and recreational vessels operate across a wide variety of marine environments.
For customers in the Philippines, a QSB6.7 inboard engine for sale Philippines can be an attractive option for suitable fishing, transport, commercial and recreational vessels, provided the engine rating matches the boat.
QSB6.7 Inboard Europe and Africa
European buyers searching for a QSB6.7 inboard EUROPE should pay close attention to the emissions certification and exact engine configuration.
Likewise, marine operators searching for a QSB6.7 inboard engine supplier AFRICA may require engines for fishing boats, passenger vessels, workboats, marine construction support and other applications.
Buchi Trading Boat Engines serves international buyers and can discuss engine specifications, availability and shipping requirements before an order is finalized.
QSB6.7 Inboard Engine Dealer Canada
Canadian marine customers may search for a QSB6.7 inboard engine dealer Canada when replacing an existing diesel engine or planning a vessel repower.
Cold-weather operating conditions can make correct specification and installation especially important. Customers should discuss starting systems, cooling, fuel systems, electrical equipment and intended operating environment before purchasing.
QSB6.7 Inboard Engine Central America and Caribbean
Marine operators throughout Central America and the Caribbean often require dependable propulsion for fishing boats, charter vessels, workboats and transportation vessels.
Customers searching for a QSB6.7 inboard engine Center America or a QSB6.7 marine engine in the Caribbean should provide vessel details before ordering.
Please note that the correct spelling is Caribbean, although buyers may commonly search using terms such as “QSB6.7 inboard engine Carribean.” Including natural search variations can help this page reach customers without compromising readability.
QSB6.7 Inboard Engine South America
South American marine markets include commercial fishing, passenger transportation, river operations, workboats and recreational boating.
A QSB6.7 inboard engine South America search may represent several different requirements, so engine rating, operating conditions and local regulations should be considered before selecting a specific configuration.
How to Choose the Right QSB6.7 Marine Engine
Match Horsepower to the Vessel
Do not choose an engine based on horsepower alone. A marine engineer should consider the vessel’s displacement, hull design, propeller and transmission.
Check the Transmission
The gearbox must be compatible with the engine’s output, operating speed and intended propeller configuration.
Confirm Engine Dimensions
The published QSB6.7 marine dimensions are approximately 1,263.8 mm long, 910.6 mm wide and 857 mm high for the referenced configuration. Actual dimensions may differ.
Confirm Weight
A referenced QSB6.7 marine configuration is approximately 658 kg or 1,450 lb. Buyers should obtain the exact shipping and installation weight for their selected configuration.
Verify Emissions Certification
Emission requirements differ between markets. Always confirm that the exact engine configuration is appropriate for the country and vessel application.
Shipping a QSB6.7 Inboard Engine Internationally
When purchasing a marine diesel engine internationally, the engine price is only one part of the total transaction.
Buyers should consider:
- Engine price
- Crating
- Export documentation
- Port handling
- Ocean freight
- Marine insurance
- Destination port charges
- Customs clearance
- Import duties and taxes
- Inland transportation
- Installation costs
Buchi Trading Boat Engines can discuss shipping requirements with international buyers so that the purchase process is clearer from quotation through delivery.
Why Buy From Buchi Trading Boat Engines?
When purchasing a marine engine internationally, buyers need more than an attractive price. They need clear specifications, responsive communication and a supplier capable of understanding the practical requirements of marine propulsion.
Our goal is to connect marine customers with suitable engine solutions for their vessels and projects.
Before placing an order, customers should provide the vessel model, current engine, horsepower requirement, transmission details, intended application and destination country.
This information helps reduce the risk of purchasing an engine that does not match the vessel.
Request a Quote – RFQ for QSB6.7 Marine Engine
Ready to purchase a QSB6.7 inboard Engine for Sale?
Send an RFQ with the following information:
- Your name or company name
- Country and delivery location
- Vessel type
- Vessel model
- Existing engine model
- Required horsepower
- Required quantity
- New or replacement application
- Transmission requirement
- Preferred engine configuration
- Required delivery time
- Any special installation requirements
QSB6.7 RFQ Request
Product: Cummins QSB6.7 Marine Inboard Engine
Quantity: [Enter Quantity]
Required HP: [Enter HP]
Vessel Type: [Enter Vessel Type]
Destination Country: [Enter Country]
Transmission Required: [Yes/No]
Condition: [New/Reconditioned/Used – as applicable]
Shipping Port/City: [Enter Destination]
For a fast quotation, provide as much of the above information as possible
Frequently Asked Questions
Is the QSB6.7 a good marine engine?
The QSB6.7 is a well-established Cummins marine diesel platform featuring six cylinders, 6.7-liter displacement, turbocharging/aftercooling and high-pressure common-rail fuel technology. Its multiple marine ratings make it adaptable to different propulsion requirements.
How much horsepower does a QSB6.7 marine engine produce?
The exact output depends on the marine rating. Cummins currently lists QSB6.7 marine configurations ranging from approximately 230 hp to 550 hp.
What is the displacement of the QSB6.7?
The QSB6.7 has a displacement of 6.7 liters, equivalent to approximately 408 cubic inches.
What fuel system does the QSB6.7 use?
The marine QSB6.7 uses a high-pressure common-rail fuel system.
Is the QSB6.7 suitable for repowering?
It can be considered for marine repower projects, but compatibility must be assessed carefully. The engine, gearbox, shaft, propeller, exhaust, cooling, controls and electrical systems all need to be evaluated.
Can you ship QSB6.7 engines internationally?
International shipping can be arranged depending on engine availability, destination and logistics requirements. Buyers should request a quotation that includes their specific delivery location.
Conclusion: Find Your QSB6.7 Inboard Engine
For boat owners, commercial marine operators, fishing businesses, shipyards and international engine buyers, the QSB6.7 inboard Engine for Sale represents a powerful marine diesel option with a broad range of available ratings.
Its 6.7-liter inline-six architecture, turbocharging, aftercooling and high-pressure common-rail fuel system provide the foundation for strong and dependable marine propulsion. Cummins’ current marine information shows multiple configurations extending from around 230 hp to 550 hp, depending on application and rating.
Whether you are searching for a QSB6.7 inboard engine for sale USA, a QSB6.7 inboard engine for sale Australia, a QSB6.7 inboard engine supplier AFRICA, a QSB6.7 inboard engine dealer Canada, a QSB6.7 inboard engine for sale Philippines or a marine diesel engine for another international market, the most important step is matching the correct engine configuration to your vessel.
Contact Buchi Trading Boat Engines today with your vessel and engine requirements and request a quotation for your QSB6.7 marine engine project.
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