Cummins QSB6.7 480HP Marine Diesel Engine

Description

New Cummins QSB6.7 480HP Marine Diesel Engine Fro Sale

The Cummins QSB6.7 480HP Marine Diesel Engine is a high-output, electronically controlled marine propulsion engine designed for demanding commercial operations and premium recreational vessels. Supplied brand new by Coastal Wave Marine, every engine is delivered in a complete factory marine configuration with genuine standard manufacturer accessories, ensuring reliable performance, regulatory compliance, and confidence in installation.

Built on Cummins’ proven 6.7-litre inline six-cylinder platform, the Cummins QSB6.7 480HP combines advanced Bosch High-Pressure Common Rail (HPCR) fuel injection, turbocharging, seawater aftercooling, and sophisticated electronic engine management to provide exceptional acceleration, responsive throttle control, excellent torque, and outstanding fuel efficiency.

Rated at 480 horsepower, this high-output marine diesel engine is ideal for operators seeking powerful, dependable propulsion while benefiting from Cummins’ renowned durability, low operating costs, and worldwide service support. The recreational 480HP model is rated at 3300 RPM and is designed for high-output marine propulsion applications.

Key Features

• 480 HP electronically controlled marine diesel engine
• Proven 6.7-litre inline six-cylinder platform
• Bosch High-Pressure Common Rail (HPCR) fuel injection
• Turbocharged with seawater aftercooling
• Outstanding power-to-weight ratio
• Fast throttle response and excellent mid-range torque
• Electronic Engine Control Module (ECM)
• EPA Tier 3 and IMO emissions compliant
• Available with multiple marine transmission configurations
• Supported by Cummins’ global dealer and service network

Engineered for Demanding Marine Applications

The Cummins QSB6.7 480HP Marine Diesel Engine is engineered to deliver dependable propulsion across a wide range of commercial and recreational vessels, including:

• Sportfishing boats
• Offshore patrol vessels
• Pilot boats
• Crew transfer vessels
• Commercial workboats
• Rescue and emergency response craft
• Express cruisers
• Motor yachts
• Government and law enforcement vessels

Its electronically controlled fuel system delivers smooth acceleration, clean combustion, reduced engine noise, and excellent fuel efficiency while maintaining strong torque throughout the operating range. The engine performs exceptionally well in high-speed and semi-planing hull applications where responsive power and reliability are essential.

Designed to meet EPA Tier 3 and IMO emissions standards, the QSB6.7 480HP provides environmentally responsible performance without compromising durability or operating efficiency. Cummins’ global dealer network ensures access to genuine replacement parts and factory-trained service technicians in major marine markets worldwide.

An Intelligent Repower Solution

The Cummins QSB6.7 480HP Marine Diesel Engine is an excellent repower solution for owners looking to modernize aging propulsion systems while improving reliability, fuel economy, and overall vessel performance.

It is commonly specified as a replacement for:

• Cummins QSC8.3 marine engines
• Cummins 6CTA marine engines
• Earlier Cummins QSB6.7 models
• Caterpillar C7 marine engines
• Volvo Penta D9 propulsion systems
• Other 425–500HP marine diesel engines

The modern 6.7-litre platform delivers greater power density, advanced electronic controls, lower emissions, and improved fuel efficiency while maintaining a compact installation footprint that simplifies many repower projects.

For repower applications, Coastal Wave Marine provides technical assistance with:

• Gear ratio compatibility
• Shaft sizing evaluation
• Engine bed assessment
• Engine mount alignment
• Duty rating selection
• Cooling system configuration
• Electronic control integration

This ensures every propulsion package is properly matched to your vessel’s displacement, operating profile, and performance objectives.

Standard Manufacturer Accessories Included

Every Cummins QSB6.7 480HP Marine Diesel Engine supplied by Coastal Wave Marine includes genuine standard manufacturer accessories rather than aftermarket substitutes.

The standard marine package includes:

• Heat exchanger marine cooling system
• Seawater aftercooler
• Wet exhaust manifold
• Marine Electronic Control Module (ECM)
• Complete engine wiring harness
• Primary alternator
• Starter motor
• Front engine mounting brackets with vibration isolators
• SAE flywheel housing
• Factory documentation and operator manuals

Each engine is supplied as a purpose-built marine propulsion engine, ensuring factory quality, proper marine certification, and dependable long-term operation.

Flexible Configuration Options

The Cummins QSB6.7 480HP Marine Diesel Engine is available in multiple factory configurations to suit different vessel types and operating requirements, including:

• Engine-only (bobtail configuration)
• Engine with ZF marine gearbox
• Engine with Twin Disc marine transmission
• Complete propulsion package with electronic controls
• Heat exchanger cooled configuration
• Keel cooled configuration
• Twin-engine installation packages

Optional equipment includes:

• Electronic control stations
• Secondary alternators
• Fuel filtration upgrades
• Digital engine monitoring systems
• Custom transmission ratios
• Installation accessories

Our technical specialists can recommend the most suitable configuration for your vessel and intended operating conditions.

Worldwide Supply and Logistics

Coastal Wave Marine supplies new Cummins marine diesel engines worldwide, providing complete export and logistics support from quotation through final delivery.

Our services include:

• Professional marine export crating
• Export documentation
• Commercial invoicing
• Freight forwarding coordination
• Port delivery
• Shipyard delivery support
• Worldwide shipping assistance

We regularly supply Cummins marine propulsion systems throughout North America, Europe, the Caribbean, South America, the Middle East, Asia-Pacific, and Africa.

Technical Specifications

Specification	Details
Engine Model	Cummins QSB6.7
Power Output	480 HP
Engine Configuration	Inline 6-Cylinder, 4-Stroke Diesel
Rated Speed	3300 RPM
Displacement	6.7 Litres
Aspiration	Turbocharged and Seawater Aftercooled
Fuel System	Bosch High-Pressure Common Rail (HPCR)
Cooling System	Heat Exchanger Cooled (Keel Cooling Optional)
Engine Management	Electronic Control Module (ECM)
Emissions	EPA Tier 3 / IMO Compliant
Electrical Options	12V or 24V Systems
Rotation	Counterclockwise (Facing Flywheel)

---

Manufacturer Warranty

Every new Cummins QSB6.7 480HP Marine Diesel Engine supplied by Coastal Wave Marine is backed by the official Cummins manufacturer’s limited warranty, subject to regional warranty policies, proper installation, and product registration.

Our technical team assists customers with warranty registration, documentation, and after-sales support to help ensure full manufacturer warranty coverage.

Why Choose Coastal Wave Marine?

Coastal Wave Marine specializes in supplying genuine commercial and recreational marine propulsion systems backed by technical expertise and responsive customer service.

When you purchase from Coastal Wave Marine, you benefit from:

• Genuine new Cummins marine engines
• Professional engine configuration assistance
• Expert repower consultation
• Worldwide logistics coordination
• Transparent technical specifications
• Complete export documentation
• Dedicated after-sales support

Our experienced team ensures every Cummins QSB6.7 480HP Marine Diesel Engine is correctly configured to deliver maximum performance, fuel efficiency, and long-term reliability.

Frequently Asked Questions

Is the Cummins QSB6.7 480HP supplied brand new?

Yes. Every engine supplied by Coastal Wave Marine is factory new and delivered with genuine manufacturer components, documentation, and standard marine accessories.

Can the engine be supplied with a marine gearbox?

Yes. We offer compatible ZF and Twin Disc marine transmissions that can be matched to your vessel’s propulsion requirements.

Is the Cummins QSB6.7 480HP suitable for repower projects?

Absolutely. It is widely used to replace older Cummins, Caterpillar, Volvo Penta, and other marine diesel engines within the 425–500HP class.

Do you ship Cummins marine engines internationally?

Yes. We provide worldwide shipping with complete export documentation, freight forwarding coordination, and delivery to ports, marinas, and shipyards.

Is a keel-cooled version available?

Yes. Both heat exchanger-cooled and keel-cooled configurations are available depending on your vessel’s operating environment.

Can Coastal Wave Marine help configure the correct engine package?

Yes. Our technical sales team can recommend the appropriate gearbox ratio, cooling configuration, duty rating, and complete propulsion package based on your vessel’s specifications.

Request a Quote for the Cummins QSB6.7 480HP Marine Diesel Engine

Whether you’re building a new vessel or planning a professional repower, Coastal Wave Marine can supply the Cummins QSB6.7 480HP Marine Diesel Engine configured to your exact operational requirements.

Contact our technical sales team today for pricing, availability, compatible marine gearboxes, lead times, and worldwide shipping options. We are committed to supplying genuine Cummins marine propulsion solutions backed by expert technical guidance, dependable logistics, and responsive after-sales support.