Cummins QSB4.5 Marine Engine Sales & Service
Cummins QSB4.5L Marine Engine Specs
- It is an in-line 4-cylinder, 16-valve, 4-stroke 4.5-liter diesel engine
- Available for commercial and recreational propulsion applications
- Based on the proven Cummins B4.5L industrial engine
- The B4.5L complies with U.S. EPA Tier 3 emissions regulations without the use of aftertreatment
- Backed by Cummins warranty
Features & Benefits
- Engine Design: The B4.5L is an in-line, 4-cylinder,16-valve cylinder head, 4-stroke diesel engine, with a robust rebuildable engine block designed for continuous operation. Industry leading engine torque provides excellent vessel acceleration, control and maneuverability.
- Fuel System: High Pressure Common Rail (HPCR) optimized for best-in-class fuel consumption lowering operating costs.
- Fuel Pump and Fuel Injectors are designed to operate with alternative fuels such as JP5, JP8 and biodiesel.
- Electric transfer fuel pump enabling a quick engine start.
- Includes primary and secondary filters with 10 and 5 microns respectively to provide better protection for the fuel pump and injectors.
- Cooling system: Single loop with low temperature aftercooler intended for keel cooled (KC) or heat exchanger (HX).
- The simplicity of the cooling system eliminates the need for a more complex two-loop system, while meeting emissions requirements.
- For KC applications, the coolant flow and temperature has been optimized to reduce the size of the keel cooler equipped with customer connections.
- For HX applications, the tube and shell heat exchanger is designed for superior durability and ease of service with minimal maintenance requirements.
- The coolant expansion tank can be integrated with the heat exchanger which is a package feature. It also features a dry-run seawater pump to allow running the engine out of the water for a limited period of time.
- Exhaust System: Has a cast water cooled exhaust manifold for lower surface temperatures improving overall performance. The B4.5L is offered with either dry or wet exhaust elbows.
- Air System: Includes commercial and recreational reusable and washable air cleaners providing overall cost savings.
- Mounting System: Includes engine mounts and vibration isolators providing a quieter work environment.
- Electrical System: Offered with 12V and 24V with simple electrical OEM interface connections integral with C Command Systems. A remote backup throttle options is also available for easier integration for vessels.
- Electronics: ECM integrates start/stop controls, fuel tank level monitoring for easier integration with the vessel. Also features engine protection and de-rates for optimum safety.
- Certifications: Complies with US EPA TIER3 emissions regulations without use of aftertreatment. Designed to meet the International Association of Classification Societies (IACS), SOLAS and USCG requirements.
Optional Equipment:
- C Command Connect
- Front Power Take Off
- SAE A Pad Accessory drive
- Marine Gear Oil Cooler
For additional information including pricing and availability, please contact our Engine department.
Cummins QSB4.5L Marine Engine Benefits: Unlocking Exceptional Power and Efficiency for Your Vessel
Introduction
Dive deep into the extensive advantages of the Cummins QSB4.5L marine engine, tailored to satisfy the diverse needs of boat enthusiasts and professionals alike. Discover the reasons why this engine stands out as a preferred choice among boat owners, celebrated for its outstanding performance in terms of both power and efficiency, setting a benchmark in marine engine technology.
Impressive Power-to-Weight Ratio
Optimize Your Vessel’s Performance
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The Cummins QSB4.5L’s exceptional power-to-weight ratio is a game-changer in the marine world, allowing vessels to achieve remarkable speed and agility. By optimizing performance, it facilitates smoother and more efficient navigation through different water conditions.
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This engine is not only designed to enhance the capabilities of speedboats but also excels in a variety of marine applications, from fishing boats to luxury yachts, offering unparalleled versatility and adaptability that boat owners can rely on.
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Exceptional Fuel Efficiency
Economize on Fuel Costs
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The Cummins QSB4.5L is engineered with an eye for fuel efficiency, a critical factor for boat operators seeking to minimize operational expenses. The engine’s design ensures that less fuel is consumed during voyages, contributing significantly to lowering the overall cost of ownership.
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Providing substantial benefits for long-distance cruisers, the engine’s advanced fuel management systems allow cruisers to extend their journeys without constantly worrying about finding refueling points, thus enhancing the boating experience by offering greater freedom and peace of mind.
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Reliable Marine Engines
Ensure Dependability on the Water
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Dependability is the cornerstone of any marine engine, and the Cummins QSB4.5L stands resilient against the ever-changing elements of the sea.
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This engine is developed to perform reliably in diverse weather conditions, ensuring that your vessel remains operational no matter where your adventures take you.
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Examples of the engine’s long-term durability abound, showcasing numerous boats that continue to run smoothly after years of operation, proving the engine’s robust construction and the high-quality materials used in its design to withstand the test of time.
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Innovative Engine Design
Experience Cutting-Edge Technology
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The Cummins QSB4.5L is at the forefront of innovation, boasting low emissions technology that not only meets but exceeds industry standards.
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Its eco-friendly attributes make it an ideal choice for environmentally conscious boaters looking to reduce their carbon footprint without compromising on performance.
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With a focus on continuous improvement, advancements in engine design have led to increased performance metrics.
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Each component has been meticulously crafted to enhance efficiency and output, ensuring that users are equipped with state-of-the-art technology for superior marine navigation.
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Expert Maintenance and Support
Optimize Longevity with 805 Marine Mechanic
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Introducing the invaluable service of 805 Marine Mechanic, a trusted partner in maintaining the Cummins QSB4.5L to its peak condition.
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Their expertise in marine engines ensures thorough maintenance and troubleshooting, providing assurance of reliability for every voyage.
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Professional support is crucial for maximizing the engine’s lifespan.
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Through routine checks and expert care, you can be confident that 805 Marine Mechanic will help optimize your engine’s longevity, ensuring your vessel remains a premier tool for adventure on the water.
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Conclusion
Empower your marine ventures with the Cummins QSB4.5L, not just a reliable and efficient marine engine, but a cornerstone of confidence and performance.
Entrust your needs to expert care, keeping your vessel running at its best, and embark on your next journey with assurance and pioneering spirit.
The Cummins QSB4.5L engine is a popular choice in the marine industry, known for its powerful performance and efficiency. Here are some key highlights:
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- Power and Torque: The QSB4.5L delivers up to 173 hp (129 kW) and a peak torque of 520 lb-ft (705 N•m), making it a strong performer for its size.
- Emissions Compliance: It meets Tier 4 Final/Stage IV emissions standards, ensuring it’s environmentally friendly.
- Turbocharger Technology: Equipped with a Variable Geometry Turbocharger (VGT), it provides rapid boost at low engine rpm and maintains high boost at higher rpm.
- Aftertreatment System: The engine features a Cummins Compact Catalyst (CCC) + Selective Catalytic Reduction (SCR) system, which effectively reduces emissions.
- Compact Design: Despite its power, the QSB4.5L is relatively compact and lightweight, making it suitable for a variety of marine applications.
Overall, the QSB4.5L is praised for its performance, efficiency, and compliance with stringent emissions standards. It’s a great option for those looking for a reliable and powerful marine engine.
