Cummins X15 525HP Marine Propulsion Diesel Engine
$38,888.00
- Description
Description
Cummins X15 525HP Marine Propulsion Diesel Engine for Sale | Coastal Wave Marine
The Cummins X15 525HP Marine Propulsion Diesel Engine is a heavy-duty, electronically controlled inboard marine propulsion engine engineered for vessels that demand exceptional torque, high reliability, and efficient long-duration performance. Supplied brand new by Coastal Wave Marine, this engine is delivered in full marine configuration with genuine standard manufacturer accessories, ensuring installation integrity, compliance with marine regulations, and dependable operational longevity.
Part of the advanced Cummins X-Series Marine Engines range, the X15 platform is built around a robust 15-litre inline six-cylinder diesel architecture designed to deliver strong propulsion performance for heavy commercial vessels and high-displacement recreational boats. The engine integrates High-Pressure Common Rail (HPCR) fuel injection, turbocharging, and advanced electronic engine management, enabling efficient combustion, improved throttle response, and dependable load-handling capability in demanding marine environments.
The 525HP configuration delivers powerful mid-range performance while maintaining efficient fuel consumption, making it a preferred propulsion solution for vessels requiring reliable power under continuous duty cycles.
Designed for Commercial and Recreational Marine Applications
The Cummins X15 525HP marine propulsion diesel engine is commonly installed in vessels requiring dependable propulsion and long operational cycles, including:
Commercial fishing vessels
Offshore supply and support vessels
Tugboats and harbor workboats
Passenger ferries and transport vessels
Coastal cargo vessels
Government patrol vessels
Long-range displacement trawlers
With its large displacement and high torque output, the 525HP configuration provides strong thrust for heavy vessels operating under demanding load conditions.
Key performance advantages include:
High low-RPM torque for heavy displacement vessels
Stable propulsion performance under continuous marine duty
Smooth throttle response and improved acceleration
Reduced vibration levels for improved onboard comfort
Efficient fuel consumption during long operational cycles
Compliance with EPA Tier 3 and IMO Tier II marine emissions standards
Advanced Marine Engineering Platform
The Cummins X15 marine propulsion engine is engineered for high-reliability marine operations using advanced electronic fuel and engine management technologies.
The engine utilizes High-Pressure Common Rail (HPCR) fuel injection, which precisely controls injection timing and fuel atomization to improve combustion efficiency and reduce fuel consumption.
The integrated electronic control module (ECM) continuously monitors critical operating parameters such as:
Engine load
Fuel consumption
Engine speed and RPM stability
Intake air pressure
Cooling system temperature
This intelligent monitoring system enhances engine protection, supports predictive maintenance planning, and improves operational efficiency.
The turbocharged and aftercooled air intake system increases intake air density entering the combustion chamber, enabling the engine to deliver strong propulsion power while maintaining efficient operating temperatures.
Proven Repower Upgrade Solution
The Cummins X15 525HP Marine Diesel Engine is frequently used as a repower solution for replacing older heavy-duty propulsion engines such as:
Cummins N14 marine engines
Cummins K-series propulsion engines
Legacy mechanical marine diesels in the 500–550HP range
Upgrading to the Cummins X15 platform provides improved torque density, cleaner combustion, and modern electronic engine management compared with older mechanical propulsion engines.
Coastal Wave Marine provides technical support for repower projects including:
Marine gearbox compatibility review
Shaft and propeller matching analysis
Engine mount alignment consultation
Cooling system configuration (heat exchanger or keel cooling)
Duty cycle classification guidance
This ensures the propulsion system is correctly configured for the vessel’s operational profile.
Standard Manufacturer Accessories Included
Each Cummins X15 525HP marine engine supplied by Coastal Wave Marine includes genuine standard manufacturer accessories, ensuring a complete marine-rated propulsion unit ready for installation.
Standard configuration includes:
Marine heat exchanger cooling system
Seawater aftercooler
Wet exhaust manifold
Cummins electronic control module (ECM)
Engine wiring harness
Heavy-duty starter motor
Primary alternator
Engine mounting brackets with vibration isolators
SAE flywheel housing
Factory manuals and documentation
This guarantees the engine is delivered in true marine propulsion configuration, not an industrial conversion.
Configuration Flexibility
The Cummins X15 525HP Marine Propulsion Diesel Engine can be supplied in several configurations to meet vessel-specific installation requirements:
Engine-only (bobtail configuration)
With ZF marine gearbox
With Twin Disc marine transmission
Complete propulsion system package with electronic controls
Heat exchanger cooled configuration
Keel-cooled configuration for commercial vessels
Custom mounting arrangements for large engine rooms
Our marine propulsion specialists ensure compatibility with vessel displacement, hull type, and operational duty rating.
Global Supply and Export Support
Coastal Wave Marine supplies new Cummins marine diesel engines to customers worldwide and provides full export support including:
Secure marine export crating
Commercial export documentation
Coordination with international freight forwarders
Delivery to shipyards, ports, and marinas globally
We support vessel operators and shipbuilders across:
North America
Europe
Caribbean
Middle East
Africa
Asia-Pacific
Technical Specifications – Cummins X15 525HP
| Specification | Details |
|---|---|
| Engine Model | Cummins X15 Marine |
| Power Output | 525 HP |
| Engine Configuration | Inline 6-Cylinder, 4-Stroke Diesel |
| Displacement | 14.9 Litres |
| Bore × Stroke | 137 mm × 169 mm |
| Aspiration | Turbocharged and Aftercooled |
| Fuel System | High-Pressure Common Rail (HPCR) |
| Peak Torque | Up to approx. 1850–2050 lb-ft depending on configuration |
| Cooling System | Heat Exchanger Cooled (Keel Cooling Optional) |
| Engine Weight (Dry) | Approx. 1343 kg (2961 lb) |
| Electrical Options | 12V or 24V Systems |
| Rotation | Counterclockwise (Facing Flywheel) |
The Cummins X15 marine platform provides propulsion ratings between approximately 450 and 600 horsepower, delivering high torque and reliable power for heavy marine applications.
Why Buy Your Cummins X15 525HP from Coastal Wave Marine
Coastal Wave Marine specializes in supplying brand-new Cummins marine propulsion engines for commercial and recreational marine applications.
We provide:
Verified new engine supply
Professional propulsion configuration assistance
Marine repower consultation
Global logistics management
Transparent documentation and technical support
When investing in a Cummins X15 525HP Marine Propulsion Diesel Engine, proper specification and trusted supply are essential. Coastal Wave Marine ensures each engine is correctly configured, fully documented, and ready for reliable marine operation worldwide.

