DescriptionNew Cummins QSB6.7 480HP Marine Diesel Engine Fro SaleThe 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 Features480 HP electronically controlled marine diesel engineProven 6.7-litre inline six-cylinder platformBosch High-Pressure Common Rail (HPCR) fuel injectionTurbocharged with seawater aftercoolingOutstanding power-to-weight ratioFast throttle response and excellent mid-range torqueElectronic Engine Control Module (ECM)EPA Tier 3 and IMO emissions compliantAvailable with multiple marine transmission configurationsSupported by Cummins’ global dealer and service networkEngineered for Demanding Marine ApplicationsThe Cummins QSB6.7 480HP Marine Diesel Engine is engineered to deliver dependable propulsion across a wide range of commercial and recreational vessels, including:Sportfishing boatsOffshore patrol vesselsPilot boatsCrew transfer vesselsCommercial workboatsRescue and emergency response craftExpress cruisersMotor yachtsGovernment and law enforcement vesselsIts 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 SolutionThe 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 enginesCummins 6CTA marine enginesEarlier Cummins QSB6.7 modelsCaterpillar C7 marine enginesVolvo Penta D9 propulsion systemsOther 425–500HP marine diesel enginesThe 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 compatibilityShaft sizing evaluationEngine bed assessmentEngine mount alignmentDuty rating selectionCooling system configurationElectronic control integrationThis ensures every propulsion package is properly matched to your vessel’s displacement, operating profile, and performance objectives.Standard Manufacturer Accessories IncludedEvery 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 systemSeawater aftercoolerWet exhaust manifoldMarine Electronic Control Module (ECM)Complete engine wiring harnessPrimary alternatorStarter motorFront engine mounting brackets with vibration isolatorsSAE flywheel housingFactory documentation and operator manualsEach engine is supplied as a purpose-built marine propulsion engine, ensuring factory quality, proper marine certification, and dependable long-term operation.Flexible Configuration OptionsThe 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 gearboxEngine with Twin Disc marine transmissionComplete propulsion package with electronic controlsHeat exchanger cooled configurationKeel cooled configurationTwin-engine installation packagesOptional equipment includes:Electronic control stationsSecondary alternatorsFuel filtration upgradesDigital engine monitoring systemsCustom transmission ratiosInstallation accessoriesOur technical specialists can recommend the most suitable configuration for your vessel and intended operating conditions.Worldwide Supply and LogisticsCoastal 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 cratingExport documentationCommercial invoicingFreight forwarding coordinationPort deliveryShipyard delivery supportWorldwide shipping assistanceWe regularly supply Cummins marine propulsion systems throughout North America, Europe, the Caribbean, South America, the Middle East, Asia-Pacific, and Africa.Technical SpecificationsSpecificationDetailsEngine ModelCummins QSB6.7Power Output480 HPEngine ConfigurationInline 6-Cylinder, 4-Stroke DieselRated Speed3300 RPMDisplacement6.7 LitresAspirationTurbocharged and Seawater AftercooledFuel SystemBosch High-Pressure Common Rail (HPCR)Cooling SystemHeat Exchanger Cooled (Keel Cooling Optional)Engine ManagementElectronic Control Module (ECM)EmissionsEPA Tier 3 / IMO CompliantElectrical Options12V or 24V SystemsRotationCounterclockwise (Facing Flywheel)Manufacturer WarrantyEvery 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 enginesProfessional engine configuration assistanceExpert repower consultationWorldwide logistics coordinationTransparent technical specificationsComplete export documentationDedicated after-sales supportOur 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 QuestionsIs 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 EngineWhether 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.
Search by Vehicle 
Search by Vehicle 
