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List Of Marine Diesel Engines By Cummins
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Cummins 4BTA Marine Engine
Ideal for small commercial fishing boats and pleasure crafts, offering a balance of efficiency and reliability.
Cummins 4BTA – Specs & Overview
The Cummins 4BTA is a compact, fuel-efficient, and reliable marine diesel engine widely used in small commercial fishing boats and pleasure crafts. It is known for its durability, ease of maintenance, and impressive power-to-weight ratio, making it an excellent choice for marine applications where space and weight are considerations.
Key Specifications:
- Configuration: 4-cylinder, in-line, turbocharged
- Displacement: 3.9 liters (239 cubic inches)
- Horsepower Range: 105-150 HP @ 2,500-2,800 RPM
- Torque: Approximately 300-350 lb-ft
- Aspiration: Turbocharged and aftercooled
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Cummins 6BTA Marine Engine
Commonly used in medium-sized commercial vessels and recreational boats, known for its durability and performance.
Cummins 6BTA – Specs & Overview
The Cummins 6BTA is one of the most popular and reliable marine diesel engines for medium-sized commercial vessels and recreational boats. It is known for its excellent power-to-weight ratio, fuel efficiency, and durability, making it a top choice for fishing boats, passenger vessels, and workboats.
Key Specifications:
- Configuration: 6-cylinder, in-line, turbocharged
- Displacement: 5.9 liters (359 cubic inches)
- Horsepower Range: 210-370 HP @ 2,600-3,000 RPM
- Torque: 500-900 lb-ft (varies by model)
- Aspiration: Turbocharged and aftercooled (6BTA models)
- Fuel System: Mechanical direct injection
- Cooling System: Freshwater cooled with heat exchanger
- Weight: ~1,100-1,300 lbs (500-590 kg)
- Fuel Consumption: ~12-18 gallons per hour at full load
Why It’s Popular in Marine Applications:
✔ Proven Reliability: Used in thousands of marine vessels worldwide
✔ Efficient Power Output: Provides strong mid-range torque for marine propulsion
✔ Fuel Economy: Known for its balance of power and fuel efficiency
✔ Easy Maintenance: Simple mechanical design with widely available parts
✔ Versatility: Used in fishing boats, charter boats, pilot vessels, and light commercial applicationsThe Cummins 6BTA remains a favorite among boat owners due to its simplicity, durability, and cost-effective performance, making it one of the best choices for marine repowers and new installations alike.
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Cummins 6CTA Marine Engine
Suited for larger commercial fishing vessels and passenger boats, providing robust power and efficiency.Cummins 6CTA – Specs & Overview
The Cummins 6CTA is a powerful and efficient marine diesel engine widely used in larger commercial fishing vessels, passenger boats, and light-duty workboats. Known for its high torque, durability, and smooth performance, the 6CTA 8.3-liter engine is an ideal choice for demanding marine applications where reliability and efficiency are key.
Key Specifications:
- Configuration: 6-cylinder, in-line, turbocharged
- Displacement: 8.3 liters (506 cubic inches)
- Horsepower Range: 300-480 HP @ 2,100-2,800 RPM
- Torque: 900-1,200 lb-ft (varies by model)
- Aspiration: Turbocharged and aftercooled
- Fuel System: Mechanical direct injection (older models) / Electronic fuel injection (QSC models)
- Cooling System: Freshwater cooled with heat exchanger
- Weight: ~1,600-1,850 lbs (725-840 kg)
- Fuel Consumption: ~16-22 gallons per hour at full load
Why It’s Popular in Marine Applications:
✔ High Torque Output: Delivers strong low-end and mid-range torque for marine propulsion
✔ Fuel Efficiency: Balances power with reasonable fuel consumption, reducing operating costs
✔ Durability: Built for heavy-duty applications, making it a reliable choice for commercial vessels
✔ Smooth Operation: The larger displacement provides steady and consistent power delivery
✔ Versatile Applications: Commonly used in trawlers, fishing boats, passenger ferries, and patrol boats
The Cummins 6CTA is one of the most sought-after marine engines, offering a blend of power, efficiency, and dependability for both recreational and commercial vessels that require consistent performance under heavy loads.
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Cummins QSB Marine Engine
Designed for various marine applications, including recreational and light commercial vessels, emphasizing fuel efficiency and low emissions.
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Cummins QSC Marine Engine
Used in larger yachts and commercial vessels, offering advanced electronic controls and enhanced performance.
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Cummins QSL Marine Engine
deal for heavy-duty marine applications, such as towboats and offshore support vessels, known for its high torque and reliability.
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Cummins QSM11 Marine Engine
Commonly found in commercial fishing boats, passenger ferries, and workboats, delivering dependable power and efficiency.
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Cummins VTA28 Marine Engine
Utilized in large commercial vessels and marine auxiliary power units, recognized for its substantial power output.
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Cummins VTA903 Marine Engine
Applied in military marine vessels and specialized commercial boats, valued for its compact design and high performance.
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Cummins VTA1710 Marine Engine
Employed in heavy-duty marine applications, including large tugs and offshore vessels, known for its exceptional power and durability.
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Cummins KTA19 Marine Engine
Suitable for various marine vessels, such as fishing boats and small cargo ships, offering a balance of power and efficiency.
Cummins KTA38 Marine Engine
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Used in large commercial vessels and marine generator sets, providing high power output and reliability.
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Cummins KTA50 Marine Engine
Ideal for heavy-duty marine applications, including large cargo ships and offshore vessels, known for its robust performance.
- Cummins QSK19 Marine Engine
Applied in high-performance marine vessels, such as patrol boats and fast ferries, offering advanced technology and efficiency.
- Cummins NT855 Marine Engine
Commonly used in various marine applications, including fishing boats and small commercial vessels, valued for its reliability and ease of maintenance.
Cummins has a long history of producing marine diesel engines, with some models dating back several decades. Some of the engines listed above, such as the K Series and VTA Series, were introduced in the 1960s and 1970s and were widely used in commercial and military applications. More recent models, such as the QSB and QSC series, feature advanced technology and are designed to meet modern emissions standards while providing high efficiency and reliability.
